Arquivo da tag: Incerteza

Climate change in the news (DISCCRS)

DISCCRSnews Digest, Vol 83, Issue 1 – October 7, 2014

The world is warming faster than we thought – New Scientist – October 5, 2014 – http://www.newscientist.com/article/dn26317-the-world-is-warming-faster-than-we-thought.html#.VDMHfCiv1sQ

Past measurements may have missed massive ocean warming – Science – October 5, 2014 – http://news.sciencemag.org/climate/2014/10/past-measurements-may-have-missed-massive-ocean-warming

Scientists speed up analysis of human link to wild weather – Thomson Reuters Foundation – October 2, 2014 – http://www.trust.org/item/20141002110649-q0sm3/?source=fiOtherNews3

World falling behind 2020 plan for nature protection: UN – Reuters – October 6, 2014 – http://www.reuters.com/article/2014/10/06/us-environment-biodiversity-idUSKCN0HV08Q20141006

Ditch U.N. temperature target for global warming, study says – Reuters – October 1, 2014 – http://www.reuters.com/article/2014/10/01/us-climatechange-target-idUSKCN0HQ4N620141001

Global officials to issue communique warning of economic risk – Reuters – October 4, 2014 – http://www.reuters.com/article/2014/10/04/imf-development-idUSL2N0RZ0IV20141004

‘Large firms may be overstating value of earnings by failing to prepare for impact of global warming’ – Business World – October 6, 2014 – http://www.independent.ie/business/world/large-firms-may-be-overstating-value-of-earnings-by-failing-to-prepare-for-impact-of-global-warming-30641946.html

Argonne researchers create more accurate model for greenhouse gases from peatlands – U.S. Department of Energy?s Argonne National Laboratory Press Release (via AAAS EurekAlert) – October 2, 2014 – http://www.anl.gov/articles/argonne-researchers-create-more-accurate-model-greenhouse-gases-peatlands

Canada launches world’s largest commercial carbon-capture project – Reuters – October 1, 2014 – http://www.reuters.com/article/2014/10/01/canada-carboncapture-idUSL2N0RW1D620141001

Lack of ice forces some 35,000 walruses to chill on Alaska shore – Reuters – October 1, 2014 – http://www.reuters.com/article/2014/10/02/us-usa-climatechange-walruses-idUSKCN0HR05520141002

    Related: Walrus mass on Alaska beach – in pictures – Guardian – October 1, 2014 – http://www.theguardian.com/environment/gallery/2014/oct/01/walrus-mass-on-alaska-beach-in-pictures

    Related: US reroutes flights around Alaska beach in attempt to avoid walrus stampede – Guardian – October 2, 2014 – http://www.theguardian.com/environment/2014/oct/01/walrus-alaska-beach-trampled-death

Team advances understanding of the Greenland Ice Sheet?s meltwater channels – U.S. Department of Energy?s Los Alamos National Laboratory Press Release (via AAAS EurekAlert) – October 1, 2014 – http://www.lanl.gov/discover/news-release-archive/2014/October/10.01-greenlands-ice-sheets.php

Changing Antarctic waters could trigger steep rise in sea levels – Australian Research Council Press Release (via AAAS EurekAlert) – October 1, 2014 – https://www.climatescience.org.au/content/785-changing-antarctic-waters-could-trigger-steep-rise-sea-levels

Oceans Getting Hotter Than Anybody Realized – Climate Central – October 5, 2014 – http://www.climatecentral.org/oceans

Fish failing to adapt to rising carbon dioxide levels in ocean – Guardian – October 6, 2014 – http://www.theguardian.com/environment/2014/oct/06/fish-failing-to-adapt-to-rising-carbon-dioxide-levels-in-ocean

London’s famous red phone box goes green and solar-powered – Thomson Reuters Foundation – October 1, 2014 – http://www.trust.org/item/20141001171721-aapou/?source=fiOtherNews3

Falta de chuva reforça necessidade de usinas nucleares, dizem especialistas (Agência Brasil)

Especialistas participaram do 3º Seminário sobre Energia Nuclear, na Universidade Estadual do Rio de Janeiro (UERJ)

A falta de chuva em diversas regiões do país, principalmente no Sudeste, aponta para a necessidade de se prosseguir com os investimentos em usinas nucleares. A seca, além de afetar o fornecimento de água para a população, também compromete a geração de energia das usinas hidrelétricas, aumentando a importância das nucleares. A avaliação é de especialistas que participaram do 3º Seminário sobre Energia Nuclear, na Universidade Estadual do Rio de Janeiro (UERJ), iniciado ontem, 7, e que se encerra nesta quarta-feira, 8.

O presidente das Indústrias Nucleares do Brasil (INB), Aquilino Senra, frisou que a matriz energética brasileira é muito baseada na hidreletricidade, que vem sendo afetada pelas reiteradas e prolongadas secas nos últimos anos.

“No Brasil, a produção hídrica contribui com 92% de toda energia gerada. Os 8% restantes vêm de uma complementação térmica, na qual a nuclear tem um papel de 4%. Essa situação de baixos reservatórios levará a uma tomada de decisão mais rápida sobre a expansão da produção de energia nuclear. É inevitável, nas próximas décadas, um potencial de crescimento nuclear”, disse Senra.

O supervisor da Gerência de Análise de Segurança Nuclear da Eletronuclear, Edson Kuramoto, disse que a menor quantidade de chuva nos últimos anos forçou o governo a utilizar totalmente as usinas térmicas, incluindo as nucleares, para garantir o fornecimento. “Hoje está demonstrado que a matriz energética brasileiras é hidrotérmica.

Desde 2012, com a redução das chuvas, os reservatórios estão baixos e as térmicas foram despachadas justamente para complementar a falta da geração hidráulica. A energia nuclear tem que ser lembrada, porque o Brasil domina o ciclo e nós temos grandes reservas do combustível”, disse Kuramoto.

Segundo Kuramoto, além das usinas Angra 1 e 2, já em funcionamento, e Angra 3, em construção, o país precisará de pelo menos mais quatro usinas nucleares, sendo duas no Nordeste e duas no Sudeste. “O potencial de hidrelétricas que temos ainda é no Norte do país, mas está difícil o licenciamento de novas usinas com reservatórios. No passado, nossas hidrelétricas suportavam um recesso de chuvas de seis ou sete meses, hoje é três meses. Então o país vai ter que investir nas usinas térmicas. Até 2030, finda o nosso potencial hidráulico. A partir daí, o Brasil terá de construir novas térmicas, sejam nucleares, a gás, óleo combustível ou carvão.”

Segundo o presidente da INB, o Brasil tem garantidas reservas de urânio pelos próximos 120 anos pelo menos. Isso garante um custo baixo do combustível, que ainda tem a vantagem de não emitir gases de efeito estufa. Para Senra, a questão da segurança, muito questionada por causa do acidente da Usina de Fukushima, no Japão, já está solucionada com as novas gerações de usinas.

“Os reatores de Fukushima são de segunda geração. Os que estão começando a ser instalados agora são de terceira geração e neles não ocorreriam acidentes como os que já ocorreram, seja em 1979, nos Estados Unidos [em Three Mile Island, Pensilvânia], ou em 1986, em Chernobil [Ucrânia], e em 2011, em Fukishima”, explicou Senra.

(Vladimir Platonow/Agência Brasil)

http://agenciabrasil.ebc.com.br/geral/noticia/2014-10/falta-de-chuva-reforca-necessidade-de-usinas-nucleares-dizem-especialistas

Futures of the Past – The Appendix

Futures of the Past

“Futures of the Past” is an issue about how past generations have reckoned their collective futures. But it’s also about how the razor’s edge of the present comes up against the haziness of futurity, and what happens when that hazy future becomes inscribed, remembered, and—eventually—forgotten. We’re interested here in the work that the future does in shaping history—as a utopian dream, a set of collective anxieties, or simply as a story that we tell about where we come from and where we hope to end up.


Chapter 1: Bad Predictions


Chapter 2: Futures Past


Chapter 3: The Politics of the Future

Adding uncertainty to improve mathematical models (Science Daily)

Date: September 29, 2014

Source: Brown University

Summary: Mathematicians have introduced a new element of uncertainty into an equation used to describe the behavior of fluid flows. While being as certain as possible is generally the stock and trade of mathematics, the researchers hope this new formulation might ultimately lead to mathematical models that better reflect the inherent uncertainties of the natural world.

Burgers’ equation. Named for Johannes Martinus Burgers (1895–1981), the equation describes fluid flows, as when two air masses meet and create a front. A new development accounts for many more complexities and uncertainties, making predictions more robust, less sterile. Credit: Image courtesy of Brown University

Ironically, allowing uncertainty into a mathematical equation that models fluid flows makes the equation much more capable of correctly reflecting the natural world — like the formation, strength, and position of air masses and fronts in the atmosphere.

Mathematicians from Brown University have introduced a new element of uncertainty into an equation used to describe the behavior of fluid flows. While being as certain as possible is generally the stock and trade of mathematics, the researchers hope this new formulation might ultimately lead to mathematical models that better reflect the inherent uncertainties of the natural world.

The research, published in Proceedings of the Royal Society A, deals with Burgers’ equation, which is used to describe turbulence and shocks in fluid flows. The equation can be used, for example, to model the formation of a front when airflows run into each other in the atmosphere.

“Say you have a wave that’s moving very fast in the atmosphere,” said George Karniadakis, the Charles Pitts Robinson and John Palmer Barstow Professor of Applied Mathematics at Brown and senior author of the new research. “If the rest of the air in the domain is at rest, then flow one goes over the other. That creates a very stiff front or a shock, and that’s what Burgers’ equation describes.”

It does so, however, in what Karniadakis describes as “a very sterilized” way, meaning the flows are modeled in the absence of external influences.

For example, when modeling turbulence in the atmosphere, the equations don’t take into consideration the fact that the airflows are interacting not just with each other, but also with whatever terrain may be below — be it a mountain, a valley or a plain. In a general model designed to capture any random point of the atmosphere, it’s impossible to know what landforms might lie underneath. But the effects of whatever those landforms might be can still be accounted for in the equation by adding a new term — one that treats those effects as a “random forcing.”

In this latest research, Karniadakis and his colleagues showed that Burgers’ equation can indeed be solved in the presence of this additional random term. The new term produces a range of solutions that accounts for uncertain external conditions that could be acting on the model system.

The work is part of a larger effort and a burgeoning field in mathematics called uncertainty quantification (UQ). Karniadakis is leading a Multidisciplinary University Research Initiative centered at Brown to lay out the mathematical foundations of UQ.

“The general idea in UQ,” Karniadakis said, “is that when we model a system, we have to simplify it. When we simplify it, we throw out important degrees of freedom. So in UQ, we account for the fact that we committed a crime with our simplification and we try to reintroduce some of those degrees of freedom as a random forcing. It allows us to get more realism from our simulations and our predictions.”

Solving these equations is computationally expensive, and only in recent years has computing power reached a level that makes such calculations possible.

“This is something people have thought about for years,” Karniadakis said. “During my career, computing power has increased by a factor of a billion, so now we can think about harnessing that power.”

The aim, ultimately, is to make the mathematical models describing all kinds of phenomena — from atmospheric currents to the cardiovascular system to gene expression — that better reflect the uncertainties of the natural world.

Heyrim Cho and Daniele Venturi were co-authors on the paper.

Journal Reference:

  1. H. Cho, D. Venturi, G. E. Karniadakis. Statistical analysis and simulation of random shocks in stochastic Burgers equation. Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2014; 470 (2171): 20140080 DOI: 10.1098/rspa.2014.0080

We’re way more screwed than we were the last time the U.N. had a big climate meeting (Grist)

REALITY CHECK
It’s been nearly five years since President Obama and other heads of state attended a major U.N. climate event. In the time since the 2009 Copenhagen conference, there has been little real progress toward a strong global climate agreement — instead there’s been backsliding. But there’s been lots of progress in making the climate go haywire.

So at the U.N. Climate Summit on Tuesday, when heads of state brag about accomplishments, make grandiose promises, and announce a lot of marginally helpful measures from the private sector and civil society, don’t be fooled. Things are a lot grimmer now than they were even five years ago.

Consider: Carbon dioxide emissions have gone up every year since 2009. CO2 concentration in the atmosphere has gone up too — from an average of 387 parts per million in 2009 to an average of more than 400 ppm for April, May, and June of this year. Last month was the hottest August ever recorded, and 2014 is on track to be the hottest year ever recorded.

A hard-hitting report released on Thursday by Oxfam International — “The Summit that Snoozed?” — highlights more ways we’ve let things get worse.  Here are some of its top points:

Climate change is costing the world more money every year. Since 2009, extreme weather-related disasters have cost more than three times what they did in the whole of the 1970s. Oxfam knows this all too well, since much of what it does is respond to the ensuing humanitarian crises. The group writes, “Devastating storms and floods in Pakistan, the Philippines and elsewhere in the world have cost thousands of lives and billions of dollars as poor countries and aid agencies like Oxfam struggle to cope.”

The U.S. actually suffered the highest number of extreme weather-related disasters in the last five years, and the largest economic losses at $198 billion. But that big price tag is because the U.S. is so rich, not because its disasters were the worst. Typhoon Haiyan took far more lives in the Philippines than Sandy did in the U.S., but Haiyan caused less economic damage. So while the U.S.’s economic damages were 14 times larger in absolute terms, the Philippines lost 1.2 percent of its GDP, while the U.S. lost only 0.2 percent.

Of the more than 112,000 lives Oxfam says were lost to extreme weather events over the past five years, more than half were in Russia, where 56,246 died from the 2010 heat wave. Russian President Vladimir Putin, by the way, is a denier of climate science and will not be attending the U.N. Climate Summit.

(A caveat, which Oxfam neglects to mention, about its economic numbers: While the comparisons across decades are adjusted for inflation, they are not adjusted for economic growth. One reason we suffer bigger economic impacts than we did in the 1970s is because we are richer and we have more valuable property to damage.)

Oxfam doesn’t provide any data on the increasing frequency of extreme weather events or their relationship to climate change. Perhaps the group, understandably, views that as a given. But lest there be any doubt: The Intergovernmental Panel on Climate Change concluded in 2011 that extreme weather would become more common due to climate change. And it’s already happening. A study from August in the Proceedings of the National Academy of Sciences found that prolonged periods of hot or wet weather during summers in the Northern Hemisphere have doubled in the last decade. A study of 2012 data by 18 international research teams published last September in the Bulletin of the American Meteorological Societyfound that human-caused climate change was partially responsible for half of the major extreme weather events that year.

The richest countries are wasting more money subsidizing fossil fuels.According to Oxfam, “The latest OECD figures of its 34 members show that total subsidies to fossil fuels have increased since Copenhagen — from just over $60 billion in 2009 to just over $80 billion in 2011. … More recent years are not yet available but there is no reason to suggest that the trend has reversed.” Since 80 percent of the world’s remaining fossil fuel reserves need to stay in the ground if we’re to keep below 2 degrees Celsius of warming, policies that encourage fossil exploration or exploitation are extremely counterproductive.

And no, despite the growth of renewable capacity and the decline in the cost of renewables, the market isn’t solving this problem for us. Since 2009, private sector investment in fossil fuels has increased from just over $1 trillion to $1.1 trillion. That’s four times the size of private investment in renewables, which decreased from $300 billion in 2011 to $250 billion in 2012.

Copenhagen’s targets were too weak, and countries have been scaling down their ambition since then. As a U.N. report found in 2010, the voluntary emission-reduction pledges countries made under the Copenhagen Accord were not large enough to keep the world from warming by less than 2 degrees Celsius, which is the target set in Copenhagen. Since then, everyone has stuck to their lowest possible targets or even lowered them further, while some countries have adopted policies that will make it impossible to meet even the targets they have. Oxfam explains:

A number of countries set pledges in the form of a range, in which the higher end would be conditional on action by other countries. Australia and New Zealand’s 5 per cent pledges would move to 25 per cent and 20 per cent respectively if an appropriate global deal were struck, while the EU’s 20 per cent target would climb to 30 per cent if the conditions were right. Of the seven rich countries (or blocs) that promised to increase their target, none have done so. …

Similarly, while there was an agreement in 2011 to extend the Kyoto Protocol, which legally commits developed countries to cut their emissions, major countries have gone backwards instead of forwards. Canada, with a focus on tar sands extraction, announced they were dropping out of the Kyoto Protocol soon afterwards and replaced its Copenhagen pledge with a new set of targets, which allow emissions to rise. Two years later, Japan tore up its Copenhagen pledge to reduce its emissions by a quarter on 1990 levels, again replacing it with a set of targets that sanction a rise instead. In July 2014, Australia repealed its carbon tax, the country’s main tool for reducing emissions at home. As a result, Australia may struggle to meet even its minimum “unconditional” Copenhagen pledge of a 5 per cent cut by 2020.

In fairness to Australia and Canada, their heads of state are ditching the Climate Summit, so it’s not like they’re even pretending they care about climate change.

In light of all this, anyone watching the Climate Summit should retain a healthy skepticism about the promises and potentially misleading progress reports being offered. But the summit is also an opportunity to right some of these wrongs. Leaders making speeches on Tuesday can propose and commit to larger emissions reductions in the lead-up to treaty negotiations in Paris next year. And they can pony up the missing money for the U.N. Green Climate Fund.

Advocates like Oxfam and the 140 organizations cosponsoring the People’s Climate March on Sunday are trying to make clear that they won’t let world leaders off the hook easily.

Jon Stewart Obliterates Republicans By Highlighting Their Ignorance On Climate Change (Politicus USA)

Tuesday, September, 23rd, 2014, 10:09 am

jon stewart climate changeedited

On Monday night’s episode of The Daily Show with Jon Stewart, host Jon Stewart devoted the first segment of his program to the subject of climate change. He discussed the People’s Climate March that took place in New York City on Sunday,where over 100,000 people took to the streets to bring awareness to the dangers facing our planet due to rapid global warming. Stewart pointed out that, while you would think people around the world are now acutely aware of the existence of climate change and its effects on the environment, this march was necessary because House Republicans continue to deny its existence.

The Daily Show host then directed his attention to a recent hearing by the House Committee on Science, Space and Technology, where White House Science Director, John Holdren,spoke in front of the committee to discuss President Obama’s initiative to reduce carbon emissions 30% by the year 2030. Stewart lamented that Holdren had the unenviable task of “pushing a million pounds of idiot up a mountain.”

Below is video of the entire segment, courtesy of Comedy Central.

Stewart highlighted the various Republicans on the committee who peppered Holdren with idiotic questions or flat-out conspiracy theories. Confirmed moron Steve Stockman asked Holdren about global ‘wobbling.’ Stockman wanted to know why it wasn’t included in any climate models when he had read somewhere that it helped contribute to the last major ice age. Holdren patiently pointed out to Stockman that ‘wobbling’ refers to changes in the planet’s tilt and orbit and takes place over tens of thousands of years. It is very slow and has a tiny effect within a time scale of 100 years, which is the normal time frame for climate models.

Of course, the stupid wasn’t just contained to Stockman. A clip was played showing California Congressman Dana Rohrabacher, a well-known climate skeptic, tossing out a question about the dangers of carbon dioxide Rohrabacher wanted to know at what level does carbon dioxide become dangerous for human beings. When Holdren stated that he always enjoys his interactions with Rohrabacher, Stewart interjected, claiming Holdren meant it in the same way someone enjoys playing peek-a-boo with a baby or teasing a cat with a laser pointer. Stewart then showed Holdren’s response, where Holdren told Rohrabacher that his question was a red herring. As Holdren stated, the focus on CO2 is not about whether or not humans can breathe with increased levels, but if those increased levels trap heat in the atmosphere and rapidly change global temperatures.

However, the worst may have been Indiana Representative Larry Bucshon. The Congressman revealed himself as a full-fledged denier on the tin-foil hat variety during the hearing. He wondered why Holdren wasn’t listening to public comments on global warming. Holdren answered that perhaps Bucshon should read the scientific literature available on the subject instead of public opinion. As exasperated Stewart stated that Bucshon should read a climate science journal instead a teabaggers YouTube comments. Stewart then said Bucshon gave away the game when Bucshon told Holdren that he doesn’t believe scientists because it is their job to do these studies. In his opinion, scientists have a vested interest to create a hoax and therefore he won’t read what they produce.

After pointing out Bucshon’s idiocy, while also revealing that Bucshon’s biggest campaign donors are energy companies, Stewart then turned it back to Stockman to end the segment. He showed Stockman asking about the rise of sea levels and wondering how long it will take. Then, Stockman amazingly insisted that sea levels won’t rise because of displacement, using an example of melting ice cubes in a glass. This finally set Stewart off. Stewart tore apart Stockman’s lack of understanding of grade-school science by bringing out a glass of ice water and a bowl of ice. Stewart then proved the point that displacement only takes into account ice that is already in a body of water. However, if you take ice from elsewhere, say land, and put it in a body of water, that water level will rise.

All in all, this was one of Stewart’s best segments in a while. He tore apart the willful ignorance and Koch-funded denial of the Republican Party when it comes to the issue of climate change. The fact is, Republicans are placing us in great harm by refusing to act at all when it comes to global warming and the devastating effects it is having on our country and planet.

A Future as Clouded as Their Past (New York Times)

Credit: Carl Wiens

We won’t ever know what the Anasazi were thinking on the eve of the 13th century when they abandoned the cities they had worked so long to build on the Colorado Plateau. The reasons had something to do with climate — a great drought and, perhaps on top of that, a mini ice age. If that wasn’t enough to defeat a thriving culture, there was the turmoil that came from just not knowing. Why were the sky and earth behaving so strangely? Why wasn’t the old magic working anymore?

The rains were not just sparser. They were no longer coming when they were supposed to — when the seedlings were in the ground waiting for water. Cooler temperatures were putting an earlier end to the growing season. Fields had been overplanted, forests stripped of wood. Crops were failing as people reverted from agriculture to hunting and gathering and fighting violently over food.

Chaco Canyon and Mesa Verde — these grand stone settlements fell silent, repurposed centuries later as national parks and monuments, memorials to the repercussions of ancient climate change.

There are many theories seeking to explain the abandonment, abstracted from faint clues in old rocks and bones and in the patterns of tree rings and pollen deposition. By some measures, there was enough water, just barely, for the Anasazi settlements to hang on. And there is evidence that they had survived drier times. A more complex story has emerged as archaeologists try to infer what they can from changes in architectural styles and pottery design — hints perhaps of a people trying out new rituals, new ways to entreat suddenly indifferent gods.

Something was happening — a slow horror, perhaps so slow that it didn’t feel like a horror, until the Anasazi’s culture began to unwind. Did their leaders engage at first in denial and then quiet deliberation? When that failed, did communities split into factions with the conservatives insisting on standing their ground — clinging to the old ways and waiting for the rains to return — and the liberals pushing for new approaches? Did a visionary arise? Some Moses leading a migration? Or three Moseses leading migrations in different directions?

One way or the other, the Anasazi disintegrated, the people moving southward. Their descendants are believed to live now in the pueblos of New Mexico and Arizona, perched on mesa tops and hugging the banks of the Rio Grande.

In modern times, many of these pueblos divide themselves, for reasons they keep from the anthropologists, into kinship groups called summer and winter people or squash and turquoise people. Could these divisions be imprints left from that 13th-century upheaval?

It is frustrating how little is known. Compared with the Byzantines, the Normans, or the Mongols, the Anasazi left such faint traces, like ripples from the radiation of their own Big Bang. They have an oral history but it is mostly secret. And there is only so much that can be derived from mythology. The closest we have to records are the crude rock etchings called petroglyphs. Were these symbols in a rudimentary language or just doodling?

Our own deliberations — imprinted onto electromagnetic waves — have been pulsing outward from Earth since the first radio news shows in the 1920s and 30s, interspersed with the “Grand Ole Opry” and the “Amos ’n’ Andy” show.

By now broadcasts about greenhouses gases, melting ice caps and rising sea levels are rippling far beyond Alpha Centauri, along with the carefully calculated outrage of Rush Limbaugh and Glenn Beck. As the waves travel farther, they converge asymptotically toward a vanishing point. Even at their strongest they might seem as esoteric to curious aliens as Anasazi rock art.

Our later emanations, if they are ever understood, might tell of great feats of geoengineering: swarms of orbiting mirrors to bounce back sunlight, oceans fertilized to create carbon-absorbing algae blooms.

The Anasazi had to make do with simpler technology — water catchment basins, irrigation channels. But when all else failed at least they had somewhere to go.

Stuck here on Earth, do we embrace the Anthropocene — this new geological epoch in which the human race has become its own force of nature? Or do we hunker down for the sixth extinction? Faced with the dilemma, we cleave as naturally as a crystal into factions, like the squash people and the pumpkin people.

Diane Ackerman is one of the latest to join the environmental optimists, who believe that the same kind of technological prowess that got us into this mess will help us adapt to it, in ways we can only begin to imagine. (Her new book, “The Human Age: The World Shaped by Us” is reviewed on Page 5.)

With her following, Ms. Ackerman may become the counterpart to Bill McKibben, the environmentalist whose book “Eaarth” (he changed the name of the planet since we have irremediably transformed the place) called for a return to simpler times with backyard farms instead of lawns and decentralized green energy. The Anasazi with solar panels on the roof.

Finally there is the 25 percent of Americans (“cool skeptics,” as a Gallup poll called them) who don’t believe the keepers of the models — the interpreters of the signs. As we flail we are generating so much data that future archaeologists, if they exist, may be overwhelmed — the opposite problem presented by the Anasazi.

More than 700 years after their fall, we have the knowledge to tell us what is going wrong this time with the atmosphere. But that has made it no easier to agree on a plan. Science can only lay the case out on the table. For all our supercomputers and climatological models, what happens next will come down to something unpredictable: the meteorology of the human mind.

Forecasts: Hopes and Fears About Climate Change (New York Times)

A few of the leaders, writers and scientists who offered their thoughts on climate change. From left: Tenzin Gyatso, Margaret Atwood, Neil deGrasse Tyson and Marlene Moses.CreditFrom left: Daniel Bockwoldt/European Pressphoto Agency; Stan Honda/Agence France-Presse — Getty Images; Mark Blinch/Reuters

Two dozen scientists, authors, and world and national figures answered two questions: What is your greatest worry about climate change? What gives you hope? Here are some of their answers, condensed for space.

JANE LUBCHENCO, Former administrator, National Oceanic and Atmospheric Administration

I worry about oceans becoming more corrosive, decimating both fisheries and coral reefs. Oceans have already become 30 percent more acidic since the beginning of the Industrial Revolution; if business-as-usual carbon emissions continue, oceans are likely to be 150 percent more acidic by the end of this century. Yikes!

I take heart in knowing that social change can happen very rapidly once a tipping point is reached, that young people are bringing new passion and creativity to the issue, and that climate change is being seen increasingly as the moral issue it is.

TENZIN GYATSO, 14th Dalai Lama of Tibet

The worst possible aspect of climate change is that it will be irreversible and irrevocable. Therefore, there is the urgency to do whatever we can to protect the environment while we can.

When I was young, even I did not really think about the environment, nor did I hear much about it from others. Today, more and more people are trying to take action. We are beginning to look at this planet as our only home, and I am hopeful that this will lead to the generation of a genuine sense of universal responsibility. We can do this.

MICHAEL R. BLOOMBERG, Former mayor of New York City and special United Nations envoy for cities and climate change

Something like 90 percent of the world’s cities are on coasts, and in most places, the most vulnerable people in those cities will feel the worst impacts. We have a responsibility to do something about that. We can’t afford to sit back, cross our fingers and hope for the best.

A tremendous amount of progress is being made by cities all around the world. Cities account for some 70 percent of the emissions that cause climate change, so together they can make a big difference. In New York City back in 2007, we set a goal of reducing our carbon footprint 30 percent by 2030, and we got to a 19 percent reduction in just six years.

Mayors have powers they can use to address climate change immediately. They have control over many of the things that create emissions — like transportation and buildings — and they can invest in infrastructure. They’re not interested in turning the issue into a big political fight. They’re the ones most directly responsible for people’s safety and welfare — and they recognize the dangers of inaction.

JEFFREY SACHS, Director, Earth Institute of Columbia University

The oil industry has lobbied Washington to a state of paralysis, and as is so often true, greed is at the root of the crisis, with the politicians getting in line to feed at the oil trough. The climate deniers are not the real problem. Their transparent propaganda and misdirections are laughable; their scientific ignorance is impossible to miss. The real problem is the cowardice and greed of those who absolutely know better, both in government and industry.

We are living in an age of technological breakthroughs that could transform the world economy to a low-carbon energy system by midcentury. Solar, wind, geothermal, carbon sequestration, safe nuclear energy, and energy efficiency are all part of the mix. The oil industry should cooperate, rather than faking it or dodging it as until now.

BARBARA KINGSOLVER, Novelist; author of the memoir “Animal, Vegetable, Miracle

My fear: Catastrophic extinction. We don’t get to make natural laws. Natural law made us, and it ultimately will unmake us. What makes me very sad is that we’re going to take so many species down with us.

My hope: We in the United States finally seem to be coming to the table after decades of either denial or argument. It seems as if denial as a political strategy has run its course and that we are stepping up to our responsibilities. I hope that’s true.

ALAN I. LESHNER, Chief executive, American Association for the Advancement of Science

Ideology and intuition sometimes appear to be trumping science. So people deny the evidence even as it increases. I fear that the pace at which the public understands that the climate is changing, and puts pressure on the political system, will be too slow.

We are seeing that communicating scientific knowledge has had an effect, and that makes me happy! The deniers have less and less credibility as the public understands the scientific consensus more and more.

NEIL DeGRASSE TYSON, Director, Hayden Planetarium

I find that to worry about things is to invest emotional energy in ways that do not lead to change. Always better to do something about a problem than to worry about it.

What I expect will happen in the coming decades is that beachfront real estate, some of the most expensive in the housing marketplace, will become overrun by storm surges with enough frequency that it will force the wealthiest class (who might have previously been in denial of the phenomenon) to recognize the problem and take action, actions they can take since they are typically captains of industry and are in power and in control.

JERRY BROWN, Governor of California

A huge challenge of climate change lies in the fact that for its solution, countries all over the world must collaborate in ways that are entirely unprecedented.

Each nation-state has to be fully engaged and take decisive steps outside the conventional economic comfort zone. And that requires more statesmanship that is currently in evidence in any of those countries. The mythology of the market and economistic view of life has to be transcended so people understand that a decent and sustainable quality of life requires a very different philosophy than the one that governs contemporary societies.

Here in California, we’re leading the nation in the economic recovery and the creation of jobs, and we are pioneering climate change strategies across a broad front. We have a robust cap-and-trade system. We have a goal of one-third renewable energy in the electricity sector; we’re already at 22 percent. We have the strictest building standards in the world. We have a goal of over a million electric vehicles; we’ve got our first 100,000! We have a certain momentum in California. There are other states where this is also true.

JAMES E. HANSEN, Climate scientist, emeritus director at NASA Goddard Institute for Space Studies

The reason it’s a really dangerous situation is that the climate system does not respond quickly to the forces we apply to it. That means that we have not witnessed the impact of the gases we’ve already added to the atmosphere. We’re waiting for the public to see enough to demand effective government response.

The public doesn’t see that much yet, but there’s more in the pipeline. We are pumping energy into the ocean at a rapid rate; that energy is accumulating, and its biggest impact is going to be on ice shelves. The sea level will go up many meters. That means all coastal cities will be doomed if we stay on fossil fuel business as usual.

The upside is that the only policy that will work is making the price of fossil fuels match their cost. We have an organization determined to focus on exactly that issue: the Citizens Climate Lobby. It’s growing rapidly. Things are changing. But not fast enough.

MARIO J. MOLINA, Co-recipient of the 1995 Nobel Prize for his research on the chemistry of the ozone layer

What worries me most is the irrationality of certain interest groups preventing society from addressing the problem. Republicans in Congress are preventing action on an efficient solution such as a carbon tax.

There is a solution at hand. It doesn’t cost as much as the deniers claim. The Montreal Protocol [on ozone depletion] showed that you could solve such global problems. It would have been much more expensive not to solve it.

ELIZABETH KOLBERT, Author of “The Sixth Extinction: An Unnatural History

For the last 10,000 years or so, the climate’s been relatively stable. But if you start imagining a world with a constantly changing climate, one where, say, rainfall patterns shift dramatically every few decades, then you begin to realize how dependent we all are on that stability. And the world we’re creating is that constantly changing one.

So I worry about just about everything, starting with the basics. There are 7.2 billion people on the planet right now, and we all need to eat.

Hopefulness or a lack of it is really not the issue here. We’ve already caused a lot of damage; there’s a lot of warming that’s in effect baked into the system. We’re capable of causing a great deal more damage, and we’re also capable of limiting that damage. That’s the choice at this point, and we need to face up to that.

J. MARSHALL SHEPHERD, Former president, American Meteorological Society

It bothers me that people think there’s a big debate in science when there isn’t. Being concerned about climate change is not some whim. When I go to the mall or to Walmart, people ask, “Do you really believe in climate change?” That’s like asking, “Do you believe in gravity?” I mean, the science is clear.

What gives me optimism is that many of the people who question the science are of an older generation. The kids get it. When I go to my children’s Scout meetings or when I talk to students on campus, they get beyond the misinformation and politics.

THE REV. MITCHELL C. HESCOX, President, Evangelical Environmental Network

Climate change is the greatest moral challenge of our time because it impacts every single soul in the world. In the conservative Christian world in the United States, we’ve gotten caught up in political partisanship. I’d like to see climate change as a Christian issue and not a partisan issue.

We are the stewards of God’s creation. We believe that the earth’s creation belongs to God and that we are charged to care for it.

When we started this [network] five years ago, we had 15,000 people we regularly communicated with on this issue. Today it approaches 400,000. It means that we’re starting to overcome the partisan divide and the tide is slowly turning.

DIANA H. WALL, Director, School of Global Environmental Sustainability, Colorado State University

What keeps me up, the thing that really drives me nuts, is that the rate of change is so fast. I work in one of the most extreme ecosystems on Earth: the Antarctic Dry Valleys. It is the coldest, windiest, driest place on Earth. We’re seeing warming events and very sunny events there, and this is causing a change in the organisms I study. These species have adapted to the conditions there. We don’t know what the impact will be on them or us.

My students give me hope.

MARTIN REES, Astrophysicist, University of Cambridge

I have a lot more fears than hopes. One aspect that particularly troubles me is that economists tend to underprioritize efforts at mitigation of atmospheric carbon, because the really serious downside of inaction won’t be experienced until the 22nd century and beyond. If action is delayed, it may then be too late to avoid irreversible runaway changes.

We shouldn’t discriminate against our fellow humans on grounds of date of birth. The lifetime welfare of the newborn should rate as highly as that of the already middle-aged. Indeed, many philosophers would assign equal value to the rights of those not yet born.

For them, foreclosing the potentialities of all future generations would be so catastrophic that we should strive to reduce even the tiniest probability that this could happen.

CHRISTINE TODD WHITMAN, Former governor of New Jersey and former administrator, Environmental Protection Agency

What keeps me up at night are people who talk in absolutes. It’s the people who say “humans cause it” or “people have no role in it,” full stop. Science is not exact and the truth is in between. By taking the extreme position, they give an opening to the other side, and then people stop listening.

What gives me hope is that there are signs that the American people are beginning to relate some of the frequent weather extremes to climate.

Since 1980 our economy has grown, our population has grown and our energy use has grown, and yet our overall pollution has gone down. We are perfectly capable of implementing environmental regulation without stopping economic growth.

KATHARINE HAYHOE, Director, Climate Science Center, Texas Tech University

What troubles me as a scientist is the potential for vicious feedbacks within the climate system. The warming that we cause through all the carbon we produce could cause a series of cascading impacts that could lead to a much greater warming. The more carbon we produce, the higher the likelihood of these unpredictable risks.

What makes me hopeful are people. I’ve been working with cities, states and regional transportation councils, and none of them have to be convinced of the reality of this problem. I was sitting next to an assistant city manager for Dallas, a town not known for being green, and she blew me away with her list of amazing things Dallas has done to save energy. People are preparing for change.

MARGARET ATWOOD, Poet and novelist, author of “The Year of the Flood

The most worrisome thing is the potential death of the ocean. If it dies, we die.

What gives me hope is that more and more people are aware of the dangers we face, and many smart people are at work on solutions. Our smart brains got us into this. Let’s see if they can get us out.

FREEMAN J. DYSON, Theoretical physicist, Institute for Advanced Study

What worries me is that many people, including scientists and politicians, believe a whole lot of dogmatic nonsense about climate change. The nonsense says that climate change is a terrible danger and that it is something we could do something about if we wanted to. The whole point is to scare people, and this has been done very successfully.

Climate has always been changing, and climate has always been lousy. It has always been a background to existence that on the whole we’ve learned to cope with pretty well. What I feel happy about is that there are a lot of ordinary people with common sense who don’t believe the nonsense.

MARLENE MOSES, Nauru’s ambassador to the United Nations, chairwoman of the Alliance of Small Island States

When I go home and look at the deteriorating situation there — increased droughts, the ocean washing away the coast — I can’t help but be fearful for what the future may hold for Nauru’s children and grandchildren. How will they adapt? Will the international community be there for them? These are most distressing questions to which I don’t yet have answers.

GLORIA STEINEM, Co-founder and former editor, Ms. Magazine

Thinking about climate change used to give me images of the sun burning down and icebergs melting — horrific, but also impersonal and far away. Now I have intimate fears of storms and floods that drive us off this island of Manhattan, and fires that send thousands fleeing — in other words, just an acceleration of what we’re already seeing.

Like millions of others in public opinion polls, I’m willing to lower my standard of living to help create a turning point. We’re waiting for a practical, coordinated, understandable set of instructions that counters the Kochs, the deniers, the profiteers. Meanwhile, we try to do whatever we can.

Somehow, I find comfort in the idea that the earth is a living organism with a will of its own. The global women’s movement gives me hope because women are trying to take control of their own bodies and reproduction, which is even more basic than production. Everything we know says that when women can decide whether and when to have children, growth slows down to a little over replacement level. And that would be the single biggest long-term relief for the environment.

MARY ROBINSON, Former president of Ireland, former United Nations High Commissioner for human rights

I’m a grandmother with five grandchildren. What will they say about what we did or didn’t do?

Global Warming’s Terrifying New Math (Rolling Stone)

Three simple numbers that add up to global catastrophe – and that make clear who the real enemy is

reckoning illo
Illustration by Edel Rodriguez
BY | July 19, 2012

If the pictures of those towering wildfires in Colorado haven’t convinced you, or the size of your AC bill this summer, here are some hard numbers about climate change: June broke or tied 3,215 high-temperature records across the United States. That followed the warmest May on record for the Northern Hemisphere – the 327th consecutive month in which the temperature of the entire globe exceeded the 20th-century average, the odds of which occurring by simple chance were 3.7 x 10-99, a number considerably larger than the number of stars in the universe.

Meteorologists reported that this spring was the warmest ever recorded for our nation – in fact, it crushed the old record by so much that it represented the “largest temperature departure from average of any season on record.” The same week, Saudi authorities reported that it had rained in Mecca despite a temperature of 109 degrees, the hottest downpour in the planet’s history.

Not that our leaders seemed to notice. Last month the world’s nations, meeting in Rio for the 20th-anniversary reprise of a massive 1992 environmental summit, accomplished nothing. Unlike George H.W. Bush, who flew in for the first conclave, Barack Obama didn’t even attend. It was “a ghost of the glad, confident meeting 20 years ago,” the British journalist George Monbiot wrote; no one paid it much attention, footsteps echoing through the halls “once thronged by multitudes.” Since I wrote one of the first books for a general audience about global warming way back in 1989, and since I’ve spent the intervening decades working ineffectively to slow that warming, I can say with some confidence that we’re losing the fight, badly and quickly – losing it because, most of all, we remain in denial about the peril that human civilization is in.

When we think about global warming at all, the arguments tend to be ideological, theological and economic. But to grasp the seriousness of our predicament, you just need to do a little math. For the past year, an easy and powerful bit of arithmetical analysis first published by financial analysts in the U.K. has been making the rounds of environmental conferences and journals, but it hasn’t yet broken through to the larger public. This analysis upends most of the conventional political thinking about climate change. And it allows us to understand our precarious – our almost-but-not-quite-finally hopeless – position with three simple numbers.

The First Number: 2° Celsius

If the movie had ended in Hollywood fashion, the Copenhagen climate conference in 2009 would have marked the culmination of the global fight to slow a changing climate. The world’s nations had gathered in the December gloom of the Danish capital for what a leading climate economist, Sir Nicholas Stern of Britain, called the “most important gathering since the Second World War, given what is at stake.” As Danish energy minister Connie Hedegaard, who presided over the conference, declared at the time: “This is our chance. If we miss it, it could take years before we get a new and better one. If ever.”

In the event, of course, we missed it. Copenhagen failed spectacularly. Neither China nor the United States, which between them are responsible for 40 percent of global carbon emissions, was prepared to offer dramatic concessions, and so the conference drifted aimlessly for two weeks until world leaders jetted in for the final day. Amid considerable chaos, President Obama took the lead in drafting a face-saving “Copenhagen Accord” that fooled very few. Its purely voluntary agreements committed no one to anything, and even if countries signaled their intentions to cut carbon emissions, there was no enforcement mechanism. “Copenhagen is a crime scene tonight,” an angry Greenpeace official declared, “with the guilty men and women fleeing to the airport.” Headline writers were equally brutal: COPENHAGEN: THE MUNICH OF OUR TIMES? asked one.

The accord did contain one important number, however. In Paragraph 1, it formally recognized “the scientific view that the increase in global temperature should be below two degrees Celsius.” And in the very next paragraph, it declared that “we agree that deep cuts in global emissions are required… so as to hold the increase in global temperature below two degrees Celsius.” By insisting on two degrees – about 3.6 degrees Fahrenheit – the accord ratified positions taken earlier in 2009 by the G8, and the so-called Major Economies Forum. It was as conventional as conventional wisdom gets. The number first gained prominence, in fact, at a 1995 climate conference chaired by Angela Merkel, then the German minister of the environment and now the center-right chancellor of the nation.

Some context: So far, we’ve raised the average temperature of the planet just under 0.8 degrees Celsius, and that has caused far more damage than most scientists expected. (A third of summer sea ice in the Arctic is gone, the oceans are 30 percent more acidic, and since warm air holds more water vapor than cold, the atmosphere over the oceans is a shocking five percent wetter, loading the dice for devastating floods.) Given those impacts, in fact, many scientists have come to think that two degrees is far too lenient a target. “Any number much above one degree involves a gamble,” writes Kerry Emanuel of MIT, a leading authority on hurricanes, “and the odds become less and less favorable as the temperature goes up.” Thomas Lovejoy, once the World Bank’s chief biodiversity adviser, puts it like this: “If we’re seeing what we’re seeing today at 0.8 degrees Celsius, two degrees is simply too much.” NASA scientist James Hansen, the planet’s most prominent climatologist, is even blunter: “The target that has been talked about in international negotiations for two degrees of warming is actually a prescription for long-term disaster.” At the Copenhagen summit, a spokesman for small island nations warned that many would not survive a two-degree rise: “Some countries will flat-out disappear.” When delegates from developing nations were warned that two degrees would represent a “suicide pact” for drought-stricken Africa, many of them started chanting, “One degree, one Africa.”

Despite such well-founded misgivings, political realism bested scientific data, and the world settled on the two-degree target – indeed, it’s fair to say that it’s the only thing about climate change the world has settled on. All told, 167 countries responsible for more than 87 percent of the world’s carbon emissions have signed on to the Copenhagen Accord, endorsing the two-degree target. Only a few dozen countries have rejected it, including Kuwait, Nicaragua and Venezuela. Even the United Arab Emirates, which makes most of its money exporting oil and gas, signed on. The official position of planet Earth at the moment is that we can’t raise the temperature more than two degrees Celsius – it’s become the bottomest of bottom lines. Two degrees.

The Second Number: 565 Gigatons

Scientists estimate that humans can pour roughly 565 more gigatons of carbon dioxide into the atmosphere by midcentury and still have some reasonable hope of staying below two degrees. (“Reasonable,” in this case, means four chances in five, or somewhat worse odds than playing Russian roulette with a six-shooter.)

This idea of a global “carbon budget” emerged about a decade ago, as scientists began to calculate how much oil, coal and gas could still safely be burned. Since we’ve increased the Earth’s temperature by 0.8 degrees so far, we’re currently less than halfway to the target. But, in fact, computer models calculate that even if we stopped increasing CO2 now, the temperature would likely still rise another 0.8 degrees, as previously released carbon continues to overheat the atmosphere. That means we’re already three-quarters of the way to the two-degree target.

How good are these numbers? No one is insisting that they’re exact, but few dispute that they’re generally right. The 565-gigaton figure was derived from one of the most sophisticated computer-simulation models that have been built by climate scientists around the world over the past few decades. And the number is being further confirmed by the latest climate-simulation models currently being finalized in advance of the next report by the Intergovernmental Panel on Climate Change. “Looking at them as they come in, they hardly differ at all,” says Tom Wigley, an Australian climatologist at the National Center for Atmospheric Research. “There’s maybe 40 models in the data set now, compared with 20 before. But so far the numbers are pretty much the same. We’re just fine-tuning things. I don’t think much has changed over the last decade.” William Collins, a senior climate scientist at the Lawrence Berkeley National Laboratory, agrees. “I think the results of this round of simulations will be quite similar,” he says. “We’re not getting any free lunch from additional understanding of the climate system.”

We’re not getting any free lunch from the world’s economies, either. With only a single year’s lull in 2009 at the height of the financial crisis, we’ve continued to pour record amounts of carbon into the atmosphere, year after year. In late May, the International Energy Agency published its latest figures – CO2 emissions last year rose to 31.6 gigatons, up 3.2 percent from the year before. America had a warm winter and converted more coal-fired power plants to natural gas, so its emissions fell slightly; China kept booming, so its carbon output (which recently surpassed the U.S.) rose 9.3 percent; the Japanese shut down their fleet of nukes post-Fukushima, so their emissions edged up 2.4 percent. “There have been efforts to use more renewable energy and improve energy efficiency,” said Corinne Le Quéré, who runs England’s Tyndall Centre for Climate Change Research. “But what this shows is that so far the effects have been marginal.” In fact, study after study predicts that carbon emissions will keep growing by roughly three percent a year – and at that rate, we’ll blow through our 565-gigaton allowance in 16 years, around the time today’s preschoolers will be graduating from high school. “The new data provide further evidence that the door to a two-degree trajectory is about to close,” said Fatih Birol, the IEA’s chief economist. In fact, he continued, “When I look at this data, the trend is perfectly in line with a temperature increase of about six degrees.” That’s almost 11 degrees Fahrenheit, which would create a planet straight out of science fiction.

So, new data in hand, everyone at the Rio conference renewed their ritual calls for serious international action to move us back to a two-degree trajectory. The charade will continue in November, when the next Conference of the Parties (COP) of the U.N. Framework Convention on Climate Change convenes in Qatar. This will be COP 18 – COP 1 was held in Berlin in 1995, and since then the process has accomplished essentially nothing. Even scientists, who are notoriously reluctant to speak out, are slowly overcoming their natural preference to simply provide data. “The message has been consistent for close to 30 years now,” Collins says with a wry laugh, “and we have the instrumentation and the computer power required to present the evidence in detail. If we choose to continue on our present course of action, it should be done with a full evaluation of the evidence the scientific community has presented.” He pauses, suddenly conscious of being on the record. “I should say, a fuller evaluation of the evidence.”

So far, though, such calls have had little effect. We’re in the same position we’ve been in for a quarter-century: scientific warning followed by political inaction. Among scientists speaking off the record, disgusted candor is the rule. One senior scientist told me, “You know those new cigarette packs, where governments make them put a picture of someone with a hole in their throats? Gas pumps should have something like that.”

The Third Number: 2,795 Gigatons

This number is the scariest of all – one that, for the first time, meshes the political and scientific dimensions of our dilemma. It was highlighted last summer by the Carbon Tracker Initiative, a team of London financial analysts and environmentalists who published a report in an effort to educate investors about the possible risks that climate change poses to their stock portfolios. The number describes the amount of carbon already contained in the proven coal and oil and gas reserves of the fossil-fuel companies, and the countries (think Venezuela or Kuwait) that act like fossil-fuel companies. In short, it’s the fossil fuel we’re currently planning to burn. And the key point is that this new number – 2,795 – is higher than 565. Five times higher.

The Carbon Tracker Initiative – led by James Leaton, an environmentalist who served as an adviser at the accounting giant PricewaterhouseCoopers – combed through proprietary databases to figure out how much oil, gas and coal the world’s major energy companies hold in reserve. The numbers aren’t perfect – they don’t fully reflect the recent surge in unconventional energy sources like shale gas, and they don’t accurately reflect coal reserves, which are subject to less stringent reporting requirements than oil and gas. But for the biggest companies, the figures are quite exact: If you burned everything in the inventories of Russia’s Lukoil and America’s ExxonMobil, for instance, which lead the list of oil and gas companies, each would release more than 40 gigatons of carbon dioxide into the atmosphere.

Which is exactly why this new number, 2,795 gigatons, is such a big deal. Think of two degrees Celsius as the legal drinking limit – equivalent to the 0.08 blood-alcohol level below which you might get away with driving home. The 565 gigatons is how many drinks you could have and still stay below that limit – the six beers, say, you might consume in an evening. And the 2,795 gigatons? That’s the three 12-packs the fossil-fuel industry has on the table, already opened and ready to pour.

We have five times as much oil and coal and gas on the books as climate scientists think is safe to burn. We’d have to keep 80 percent of those reserves locked away underground to avoid that fate. Before we knew those numbers, our fate had been likely. Now, barring some massive intervention, it seems certain.

Yes, this coal and gas and oil is still technically in the soil. But it’s already economically aboveground – it’s figured into share prices, companies are borrowing money against it, nations are basing their budgets on the presumed returns from their patrimony. It explains why the big fossil-fuel companies have fought so hard to prevent the regulation of carbon dioxide – those reserves are their primary asset, the holding that gives their companies their value. It’s why they’ve worked so hard these past years to figure out how to unlock the oil in Canada’s tar sands, or how to drill miles beneath the sea, or how to frack the Appalachians.

If you told Exxon or Lukoil that, in order to avoid wrecking the climate, they couldn’t pump out their reserves, the value of their companies would plummet. John Fullerton, a former managing director at JP Morgan who now runs the Capital Institute, calculates that at today’s market value, those 2,795 gigatons of carbon emissions are worth about $27 trillion. Which is to say, if you paid attention to the scientists and kept 80 percent of it underground, you’d be writing off $20 trillion in assets. The numbers aren’t exact, of course, but that carbon bubble makes the housing bubble look small by comparison. It won’t necessarily burst – we might well burn all that carbon, in which case investors will do fine. But if we do, the planet will crater. You can have a healthy fossil-fuel balance sheet, or a relatively healthy planet – but now that we know the numbers, it looks like you can’t have both. Do the math: 2,795 is five times 565. That’s how the story ends.

So far, as I said at the start, environmental efforts to tackle global warming have failed. The planet’s emissions of carbon dioxide continue to soar, especially as developing countries emulate (and supplant) the industries of the West. Even in rich countries, small reductions in emissions offer no sign of the real break with the status quo we’d need to upend the iron logic of these three numbers. Germany is one of the only big countries that has actually tried hard to change its energy mix; on one sunny Saturday in late May, that northern-latitude nation generated nearly half its power from solar panels within its borders. That’s a small miracle – and it demonstrates that we have the technology to solve our problems. But we lack the will. So far, Germany’s the exception; the rule is ever more carbon.

This record of failure means we know a lot about what strategies don’t work. Green groups, for instance, have spent a lot of time trying to change individual lifestyles: the iconic twisty light bulb has been installed by the millions, but so have a new generation of energy-sucking flatscreen TVs. Most of us are fundamentally ambivalent about going green: We like cheap flights to warm places, and we’re certainly not going to give them up if everyone else is still taking them. Since all of us are in some way the beneficiaries of cheap fossil fuel, tackling climate change has been like trying to build a movement against yourself – it’s as if the gay-rights movement had to be constructed entirely from evangelical preachers, or the abolition movement from slaveholders.

People perceive – correctly – that their individual actions will not make a decisive difference in the atmospheric concentration of CO2; by 2010, a poll found that “while recycling is widespread in America and 73 percent of those polled are paying bills online in order to save paper,” only four percent had reduced their utility use and only three percent had purchased hybrid cars. Given a hundred years, you could conceivably change lifestyles enough to matter – but time is precisely what we lack.

A more efficient method, of course, would be to work through the political system, and environmentalists have tried that, too, with the same limited success. They’ve patiently lobbied leaders, trying to convince them of our peril and assuming that politicians would heed the warnings. Sometimes it has seemed to work. Barack Obama, for instance, campaigned more aggressively about climate change than any president before him – the night he won the nomination, he told supporters that his election would mark the moment “the rise of the oceans began to slow and the planet began to heal.” And he has achieved one significant change: a steady increase in the fuel efficiency mandated for automobiles. It’s the kind of measure, adopted a quarter-century ago, that would have helped enormously. But in light of the numbers I’ve just described, it’s obviously a very small start indeed.

At this point, effective action would require actually keeping most of the carbon the fossil-fuel industry wants to burn safely in the soil, not just changing slightly the speed at which it’s burned. And there the president, apparently haunted by the still-echoing cry of “Drill, baby, drill,” has gone out of his way to frack and mine. His secretary of interior, for instance, opened up a huge swath of the Powder River Basin in Wyoming for coal extraction: The total basin contains some 67.5 gigatons worth of carbon (or more than 10 percent of the available atmospheric space). He’s doing the same thing with Arctic and offshore drilling; in fact, as he explained on the stump in March, “You have my word that we will keep drilling everywhere we can… That’s a commitment that I make.” The next day, in a yard full of oil pipe in Cushing, Oklahoma, the president promised to work on wind and solar energy but, at the same time, to speed up fossil-fuel development: “Producing more oil and gas here at home has been, and will continue to be, a critical part of an all-of-the-above energy strategy.” That is, he’s committed to finding even more stock to add to the 2,795-gigaton inventory of unburned carbon.

Sometimes the irony is almost Borat-scale obvious: In early June, Secretary of State Hillary Clinton traveled on a Norwegian research trawler to see firsthand the growing damage from climate change. “Many of the predictions about warming in the Arctic are being surpassed by the actual data,” she said, describing the sight as “sobering.” But the discussions she traveled to Scandinavia to have with other foreign ministers were mostly about how to make sure Western nations get their share of the estimated $9 trillion in oil (that’s more than 90 billion barrels, or 37 gigatons of carbon) that will become accessible as the Arctic ice melts. Last month, the Obama administration indicated that it would give Shell permission to start drilling in sections of the Arctic.

Almost every government with deposits of hydrocarbons straddles the same divide. Canada, for instance, is a liberal democracy renowned for its internationalism – no wonder, then, that it signed on to the Kyoto treaty, promising to cut its carbon emissions substantially by 2012. But the rising price of oil suddenly made the tar sands of Alberta economically attractive – and since, as NASA climatologist James Hansen pointed out in May, they contain as much as 240 gigatons of carbon (or almost half of the available space if we take the 565 limit seriously), that meant Canada’s commitment to Kyoto was nonsense. In December, the Canadian government withdrew from the treaty before it faced fines for failing to meet its commitments.

The same kind of hypocrisy applies across the ideological board: In his speech to the Copenhagen conference, Venezuela’s Hugo Chavez quoted Rosa Luxemburg, Jean-Jacques Rousseau and “Christ the Redeemer,” insisting that “climate change is undoubtedly the most devastating environmental problem of this century.” But the next spring, in the Simon Bolivar Hall of the state-run oil company, he signed an agreement with a consortium of international players to develop the vast Orinoco tar sands as “the most significant engine for a comprehensive development of the entire territory and Venezuelan population.” The Orinoco deposits are larger than Alberta’s – taken together, they’d fill up the whole available atmospheric space.

So: the paths we have tried to tackle global warming have so far produced only gradual, halting shifts. A rapid, transformative change would require building a movement, and movements require enemies. As John F. Kennedy put it, “The civil rights movement should thank God for Bull Connor. He’s helped it as much as Abraham Lincoln.” And enemies are what climate change has lacked.

But what all these climate numbers make painfully, usefully clear is that the planet does indeed have an enemy – one far more committed to action than governments or individuals. Given this hard math, we need to view the fossil-fuel industry in a new light. It has become a rogue industry, reckless like no other force on Earth. It is Public Enemy Number One to the survival of our planetary civilization. “Lots of companies do rotten things in the course of their business – pay terrible wages, make people work in sweatshops – and we pressure them to change those practices,” says veteran anti-corporate leader Naomi Klein, who is at work on a book about the climate crisis. “But these numbers make clear that with the fossil-fuel industry, wrecking the planet is their business model. It’s what they do.”

According to the Carbon Tracker report, if Exxon burns its current reserves, it would use up more than seven percent of the available atmospheric space between us and the risk of two degrees. BP is just behind, followed by the Russian firm Gazprom, then Chevron, ConocoPhillips and Shell, each of which would fill between three and four percent. Taken together, just these six firms, of the 200 listed in the Carbon Tracker report, would use up more than a quarter of the remaining two-degree budget. Severstal, the Russian mining giant, leads the list of coal companies, followed by firms like BHP Billiton and Peabody. The numbers are simply staggering – this industry, and this industry alone, holds the power to change the physics and chemistry of our planet, and they’re planning to use it.

They’re clearly cognizant of global warming – they employ some of the world’s best scientists, after all, and they’re bidding on all those oil leases made possible by the staggering melt of Arctic ice. And yet they relentlessly search for more hydrocarbons – in early March, Exxon CEO Rex Tillerson told Wall Street analysts that the company plans to spend $37 billion a year through 2016 (about $100 million a day) searching for yet more oil and gas.

There’s not a more reckless man on the planet than Tillerson. Late last month, on the same day the Colorado fires reached their height, he told a New York audience that global warming is real, but dismissed it as an “engineering problem” that has “engineering solutions.” Such as? “Changes to weather patterns that move crop-production areas around – we’ll adapt to that.” This in a week when Kentucky farmers were reporting that corn kernels were “aborting” in record heat, threatening a spike in global food prices. “The fear factor that people want to throw out there to say, ‘We just have to stop this,’ I do not accept,” Tillerson said. Of course not – if he did accept it, he’d have to keep his reserves in the ground. Which would cost him money. It’s not an engineering problem, in other words – it’s a greed problem.

You could argue that this is simply in the nature of these companies – that having found a profitable vein, they’re compelled to keep mining it, more like efficient automatons than people with free will. But as the Supreme Court has made clear, they are people of a sort. In fact, thanks to the size of its bankroll, the fossil-fuel industry has far more free will than the rest of us. These companies don’t simply exist in a world whose hungers they fulfill – they help create the boundaries of that world.

Left to our own devices, citizens might decide to regulate carbon and stop short of the brink; according to a recent poll, nearly two-thirds of Americans would back an international agreement that cut carbon emissions 90 percent by 2050. But we aren’t left to our own devices. The Koch brothers, for instance, have a combined wealth of $50 billion, meaning they trail only Bill Gates on the list of richest Americans. They’ve made most of their money in hydrocarbons, they know any system to regulate carbon would cut those profits, and they reportedly plan to lavish as much as $200 million on this year’s elections. In 2009, for the first time, the U.S. Chamber of Commerce surpassed both the Republican and Democratic National Committees on political spending; the following year, more than 90 percent of the Chamber’s cash went to GOP candidates, many of whom deny the existence of global warming. Not long ago, the Chamber even filed a brief with the EPA urging the agency not to regulate carbon – should the world’s scientists turn out to be right and the planet heats up, the Chamber advised, “populations can acclimatize to warmer climates via a range of behavioral, physiological and technological adaptations.” As radical goes, demanding that we change our physiology seems right up there.

Environmentalists, understandably, have been loath to make the fossil-fuel industry their enemy, respecting its political power and hoping instead to convince these giants that they should turn away from coal, oil and gas and transform themselves more broadly into “energy companies.” Sometimes that strategy appeared to be working – emphasis on appeared. Around the turn of the century, for instance, BP made a brief attempt to restyle itself as “Beyond Petroleum,” adapting a logo that looked like the sun and sticking solar panels on some of its gas stations. But its investments in alternative energy were never more than a tiny fraction of its budget for hydrocarbon exploration, and after a few years, many of those were wound down as new CEOs insisted on returning to the company’s “core business.” In December, BP finally closed its solar division. Shell shut down its solar and wind efforts in 2009. The five biggest oil companies have made more than $1 trillion in profits since the millennium – there’s simply too much money to be made on oil and gas and coal to go chasing after zephyrs and sunbeams.

Much of that profit stems from a single historical accident: Alone among businesses, the fossil-fuel industry is allowed to dump its main waste, carbon dioxide, for free. Nobody else gets that break – if you own a restaurant, you have to pay someone to cart away your trash, since piling it in the street would breed rats. But the fossil-fuel industry is different, and for sound historical reasons: Until a quarter-century ago, almost no one knew that CO2 was dangerous. But now that we understand that carbon is heating the planet and acidifying the oceans, its price becomes the central issue.

If you put a price on carbon, through a direct tax or other methods, it would enlist markets in the fight against global warming. Once Exxon has to pay for the damage its carbon is doing to the atmosphere, the price of its products would rise. Consumers would get a strong signal to use less fossil fuel – every time they stopped at the pump, they’d be reminded that you don’t need a semimilitary vehicle to go to the grocery store. The economic playing field would now be a level one for nonpolluting energy sources. And you could do it all without bankrupting citizens – a so-called “fee-and-dividend” scheme would put a hefty tax on coal and gas and oil, then simply divide up the proceeds, sending everyone in the country a check each month for their share of the added costs of carbon. By switching to cleaner energy sources, most people would actually come out ahead.

There’s only one problem: Putting a price on carbon would reduce the profitability of the fossil-fuel industry. After all, the answer to the question “How high should the price of carbon be?” is “High enough to keep those carbon reserves that would take us past two degrees safely in the ground.” The higher the price on carbon, the more of those reserves would be worthless. The fight, in the end, is about whether the industry will succeed in its fight to keep its special pollution break alive past the point of climate catastrophe, or whether, in the economists’ parlance, we’ll make them internalize those externalities.

It’s not clear, of course, that the power of the fossil-fuel industry can be broken. The U.K. analysts who wrote the Carbon Tracker report and drew attention to these numbers had a relatively modest goal – they simply wanted to remind investors that climate change poses a very real risk to the stock prices of energy companies. Say something so big finally happens (a giant hurricane swamps Manhattan, a megadrought wipes out Midwest agriculture) that even the political power of the industry is inadequate to restrain legislators, who manage to regulate carbon. Suddenly those Chevron reserves would be a lot less valuable, and the stock would tank. Given that risk, the Carbon Tracker report warned investors to lessen their exposure, hedge it with some big plays in alternative energy.

“The regular process of economic evolution is that businesses are left with stranded assets all the time,” says Nick Robins, who runs HSBC’s Climate Change Centre. “Think of film cameras, or typewriters. The question is not whether this will happen. It will. Pension systems have been hit by the dot-com and credit crunch. They’ll be hit by this.” Still, it hasn’t been easy to convince investors, who have shared in the oil industry’s record profits. “The reason you get bubbles,” sighs Leaton, “is that everyone thinks they’re the best analyst – that they’ll go to the edge of the cliff and then jump back when everyone else goes over.”

So pure self-interest probably won’t spark a transformative challenge to fossil fuel. But moral outrage just might – and that’s the real meaning of this new math. It could, plausibly, give rise to a real movement.

Once, in recent corporate history, anger forced an industry to make basic changes. That was the campaign in the 1980s demanding divestment from companies doing business in South Africa. It rose first on college campuses and then spread to municipal and state governments; 155 campuses eventually divested, and by the end of the decade, more than 80 cities, 25 states and 19 counties had taken some form of binding economic action against companies connected to the apartheid regime. “The end of apartheid stands as one of the crowning accomplishments of the past century,” as Archbishop Desmond Tutu put it, “but we would not have succeeded without the help of international pressure,” especially from “the divestment movement of the 1980s.”

The fossil-fuel industry is obviously a tougher opponent, and even if you could force the hand of particular companies, you’d still have to figure out a strategy for dealing with all the sovereign nations that, in effect, act as fossil-fuel companies. But the link for college students is even more obvious in this case. If their college’s endowment portfolio has fossil-fuel stock, then their educations are being subsidized by investments that guarantee they won’t have much of a planet on which to make use of their degree. (The same logic applies to the world’s largest investors, pension funds, which are also theoretically interested in the future – that’s when their members will “enjoy their retirement.”) “Given the severity of the climate crisis, a comparable demand that our institutions dump stock from companies that are destroying the planet would not only be appropriate but effective,” says Bob Massie, a former anti-apartheid activist who helped found the Investor Network on Climate Risk. “The message is simple: We have had enough. We must sever the ties with those who profit from climate change – now.”

Movements rarely have predictable outcomes. But any campaign that weakens the fossil-fuel industry’s political standing clearly increases the chances of retiring its special breaks. Consider President Obama’s signal achievement in the climate fight, the large increase he won in mileage requirements for cars. Scientists, environmentalists and engineers had advocated such policies for decades, but until Detroit came under severe financial pressure, it was politically powerful enough to fend them off. If people come to understand the cold, mathematical truth – that the fossil-fuel industry is systematically undermining the planet’s physical systems – it might weaken it enough to matter politically. Exxon and their ilk might drop their opposition to a fee-and-dividend solution; they might even decide to become true energy companies, this time for real.

Even if such a campaign is possible, however, we may have waited too long to start it. To make a real difference – to keep us under a temperature increase of two degrees – you’d need to change carbon pricing in Washington, and then use that victory to leverage similar shifts around the world. At this point, what happens in the U.S. is most important for how it will influence China and India, where emissions are growing fastest. (In early June, researchers concluded that China has probably under-reported its emissions by up to 20 percent.) The three numbers I’ve described are daunting – they may define an essentially impossible future. But at least they provide intellectual clarity about the greatest challenge humans have ever faced. We know how much we can burn, and we know who’s planning to burn more. Climate change operates on a geological scale and time frame, but it’s not an impersonal force of nature; the more carefully you do the math, the more thoroughly you realize that this is, at bottom, a moral issue; we have met the enemy and they is Shell.

Meanwhile the tide of numbers continues. The week after the Rio conference limped to its conclusion, Arctic sea ice hit the lowest level ever recorded for that date. Last month, on a single weekend, Tropical Storm Debby dumped more than 20 inches of rain on Florida – the earliest the season’s fourth-named cyclone has ever arrived. At the same time, the largest fire in New Mexico history burned on, and the most destructive fire in Colorado’s annals claimed 346 homes in Colorado Springs – breaking a record set the week before in Fort Collins. This month, scientists issued a new study concluding that global warming has dramatically increased the likelihood of severe heat and drought – days after a heat wave across the Plains and Midwest broke records that had stood since the Dust Bowl, threatening this year’s harvest. You want a big number? In the course of this month, a quadrillion kernels of corn need to pollinate across the grain belt, something they can’t do if temperatures remain off the charts. Just like us, our crops are adapted to the Holocene, the 11,000-year period of climatic stability we’re now leaving… in the dust.

This story is from the August 2nd, 2012 issue of Rolling Stone.

Read more: http://www.rollingstone.com/politics/news/global-warmings-terrifying-new-math-20120719#ixzz3DcnjPUtj
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China, the Climate and the Fate of the Planet (Rolling Stone)

If the world’s biggest polluter doesn’t radically reduce the amount of coal it burns, nothing anyone does to stabilize the climate will matter. Inside the slow, frustrating — and maybe even hopeful — struggle to find a new way forward

 By | September 15, 2014

As the sun rises in mid-july over andrews Air Force Base near Washington, D.C., Secretary of State John Kerry climbs quickly – he’s positively bouncing – up the carpeted stairs of his blue-and-white government­issue 757. Kerry is heading to Beijing to talk with Chinese leaders about, among other things, one of President Obama’s top priorities in the waning days of his second term: the urgent need to reduce carbon pollution and limit the damage from climate change. But the rest of the world isn’t cutting Kerry any slack right now – there’s trouble with the elections in Afghanistan, rising conflict in the Middle East and upcoming negotiations with Iran on nuclear weapons. As he ducks into the plane, Kerry is already talking intensely on his cellphone, deeply wired into the global chaos. An aide shoulders his bags as well as a large black case that contains his acoustic guitar, which he takes with him everywhere and often plays late at night when he’s alone in his hotel room.

For nearly a decade, the U.S. and China, the two most powerful nations on the planet, have met every year to talk about how to run the world together. When the talks began in 2006, they focused on issues like currency-exchange rates, trade barriers and China’s never-ending disputes with Taiwan. In 2009, shortly after Obama’s inauguration, the U.S. pushed to add climate change to the mix, hoping that a better understanding between the U.S. and China would lead to a better deal at the Copenhagen climate summit that year. (It didn’t help – mistrust between the countries was a large part of the reason why the talks imploded.)

This year’s U.S. delegation includes many of the administration’s most influential climate hawks – Energy Secretary Ernest Moniz, top climate negotiator Todd Stern and John Podesta, counselor to Obama, who has become the administration’s de facto point man for climate policy. This is the diplomatic equivalent of a full-court press. In the past couple of years, Obama has made some important moves, including investing billions in clean energy, jacking up vehicle-efficiency standards and proposing rules to limit pollution from U.S. coal plants. But climate change is a global issue. Unless the West can persuade other countries to take climate action seriously, nothing any single nation does is going to matter much when it comes to solving the problem.

Except, that is, for China. The blunt truth is that what China decides to do in the next decade will likely determine whether or not mankind can halt – or at least ameliorate – global warming. The view among a number of prominent climate scientists is that if China’s emissions peak around 2025, we may – just barely – have a shot at stabilizing the climate before all hell breaks loose. But the Chinese have resisted international pressure to curb their emissions. For years, they have used the argument that they are poor, the West is rich, and that the high levels of carbon in the atmosphere were caused by America’s and Europe’s 200-year-long fossil­fuel binge. Climate change is your problem, they argued – you deal with it. But that logic doesn’t hold anymore. China is set to become the largest economy in the world this year, and in 2006, it passed the U.S. as the planet’s largest carbon polluter. China now dumps 10 billion tons of CO2 into the atmosphere every year. That number is expected to grow to 15 billion tons by 2030, dwarfing the pollution of the rest of the world. If that happens, then the chances that the world will cut carbon pollution quickly enough to avert dangerous climate change is, according to Kevin Anderson, deputy director of the Tyndall Centre for Climate Change Research in the U.K., “virtually zero.”

John Kerry knows this. He also knows that when the nations of the world gather in Paris next December to try to hammer out a global climate agreement, it may be the last best chance to address this problem before the Years of Living Dangerously begin. Like other climate negotiations held under the banner of the United Nations Framework Convention on Climate Change, the Paris meeting is likely to be warped by 25-year-old grudges and a profound sense of distrust. “But right now, Paris is the only game we have,” one member of the State Department’s climate team told me. “If it fails, there is no Plan B.”

In Beijing, one of Kerry’s goals will be to find out all he can about China’s strategy for Paris – what kind of commitment the Chinese might make, how sincere they are, what tactics they will use. But for Kerry, this is anything but a straightforward conversation, because it’s twisted up in the shadow play of U.S.-China relations, which are marked by suspicion, paranoia and saber rattling on both sides as the U.S. adjusts to China’s rising power in the world. “What we are living through now is the end of 500 years of Western predominance,” historian Niall Ferguson has written. The issue is not whether China will challenge America’s dominance, but when and how.

Secretary of State Kerry met with China's Preisent Xi

Secretary of State Kerry met with China’s Preisent Xi in Beijin in July. (Photo: © Jim Bourg/Reuters/Corbis)

Shortly before takeoff, Kerry wanders down the aisle to chat. He talks idly about his July 4th celebration and the recent storm damages to his house on Nantucket. But when asked about his expectations for the Beijing summit, he looks grave: “Frankly, we’re not sure where this is all going.” He remembers what happened in Kyoto, Japan, in 1997, when the U.S. was mocked for signing an agreement that the Senate would never ratify, and in Copenhagen in 2009, when Obama arrived at a conference that was supposed to save the world but ended up being gridlocked by squabbles over money and emissions targets. Kerry is determined not to let that happen again.

After 25 years of failed climate negotiations, it’s easy to be cynical about the upcoming talks in Paris. But there are at least three factors that make a meaningful agreement next year possible.

The first is that climate change is no longer a hypothetical problem – it’s happening in real time all around us. Droughts, floods, more destructive storms, weird weather of all sorts – just look out your window. In the latest reports from the Intergovernmental Panel on Climate Change, the world’s top scientists called the fact that the Earth is warming “unequivocal” and stated that humans are the cause of it. Without dramatic action, the planet could warm up as much as 4 degrees Celsius (7.2 F) by the end of the century, which would be catastrophic. As Kerry said of a report last September, “The response must be all hands on deck. It’s not about one country making a demand of another. It’s the science itself demanding action from all of us.”

The second factor is that until now, the biggest obstacle to an international agreement to reduce carbon pollution has been the United States. But that’s starting to change. Thanks to Obama’s recent crackdown on pollution, as well as the boom in cheap natural gas, which has displaced dirty coal, carbon emissions in the U.S. are on the decline. “What the president has done is very important,” says Robert Stavins, director of the Harvard Project on Climate Agreements. “It allows the U.S. to look at other countries and say, ‘Hey, what are you doing?'”

The final reason for hope, paradoxically, is China’s relentless demand for energy. China is in the midst of a profound economic and social transformation, trying to reinvent itself from an economy based on selling cheap goods overseas to an economy based on selling quality consumer goods at home, while keeping growth rates high and cutting dependence on fossil fuels. Energy demand is expected to double by 2030, and at that pace, there is not enough oil, coal and gas in the world to keep their economy humming. So China’s ongoing energy security depends on the nation developing alternative energy sources in a big way. “We need more of everything,” says Peggy Liu, a sustainability leader who works across China. “Wind, solar, a modernized grid. We need to leapfrog over the past and into a clean-energy future.”

China’s leaders are also waking up to the fact that recent decades of hypergrowth, most of it fired by coal, have exacted a steep price. Air pollution in China’s big cities is among the worst in the world; one recent report found that poor air quality contributed to 1.2 million premature deaths in 2010. As Hank Paulson, former Secretary of the Treasury and longtime China observer, has put it, “What is another point of GDP worth, if dirty air is killing people?” Earlier this year, a riot broke out in Zhongtai, a town in eastern China, when protests against a new waste incinerator turned violent, leaving police vehicles torched and at least 39 people injured; in southern China, protests erupted over the construction of a coal-fired power plant. Similar clashes are increasingly frequent in China as pollution-related illnesses rise.

And it’s not just the air that’s a problem in China. More than 20 percent of the country’s farmland is polluted. Sixty percent of its groundwater supply is unfit for human consumption. Rivers are industrial sewers. Last year, 16,000 swollen and rotting dead pigs were found dumped in the Huangpu River near Shanghai.

What looks to be the impacts of climate change are starting to register too. Droughts have become longer and more frequent, forcing China to import ever-increasing amounts of staples like wheat and soy. By one count, 28,000 rivers in China have vanished. China’s southern provinces have the opposite problem: devastating floods as a result of intense rainfall. In addition, much of the coastline, including cities like Shanghai, are highly vulnerable to sea-level rise.

Chinese leaders know this trajectory is unsustainable – economically and politically. Earlier this year, Premier Li Keqiang “declared war” on pollution. Party leaders in China now routinely talk about the importance of “rebalancing the economy” and creating an “ecological civilization.” China Daily, the Communist Party house organ, regularly runs stories about air pollution and toxic waste. While I was in Beijing, I asked U.S. Ambassador to China Max Baucus why the Chinese were now willing to talk so openly about environmental issues. “The fragility of their government,” he said bluntly. “They will have a social revolt on their hands if they don’t come up with a way of dealing with this.”

Pollution from coal plants

Pollution from coal plants has helped make China the larges carbon-emitter on the planet. (Photo: © Imaginechina/Corbis)

So a big push for clean energy makes a lot of sense. In fact, you could easily argue that China has already done far more than the U.S. to transform its energy supply: Including hydropower, renewables now make up 20 percent of the energy mix (compared to 13 percent in the U.S.), a share targeted to double by 2030. China is the largest producer of wind and solar power on the planet. In 2013, nearly 60 percent of new-power generation was renewable. They also have 28 new nuclear plants under construction, more than any other country. Policywise, Chinese leaders have also been innovative. In the U.S., neither a carbon tax nor a cap-and-trade system to put a price on carbon pollution is under serious consideration; in contrast, China’s carbon-trading program, which includes more than 2,000 pollution sources, is the second-largest trading system in the world (after the EU’s). “If China is successful in using market forces to cap carbon and transform its economy, that may be the best shot we have to limit climate change,” says Dan Dudek, vice president of the Environmental Defense Fund.

The problem for China, in a word, is coal: About 70 percent of the country’s electrical power comes from burning dirty rocks. The Chinese consumed nearly 4 billion tons in 2012, almost as much as the rest of the world combined. Like the oil industry in the U.S., the coal industry has enormous sway in China, making it all the more difficult to kick the habit. But as the rising power of the 21st century, China is under enormous political pressure to behave responsibly, lest it be seen as a pariah like Russia. “The choices that Chinese leaders make in the next decade will be absolutely pivotal to solving the climate crisis,” says former Vice President Al Gore. And for China’s economic and social stability, the consequences couldn’t be higher. “Politically, it’s very difficult to be fingered as the one most responsible for a looming catastrophe,” Gore continues. Or, as Harvard’s Stavins says, “If it’s your century, you don’t obstruct – you lead.”

In the decade or so after 9/11, when U.S. foreign policy revolved around hunting down and killing Islamic terrorists, we didn’t make China a priority. Then in 2011, the Obama administration announced an “Asia pivot” in U.S. foreign policy to counter China’s rising influence. Among other things, the U.S. increased its military presence and surveillance missions in the region, stoking suspicion in China that one of the goals of U.S. foreign policy is to “contain” China – both economically and militarily (if it were, the U.S. was certainly not going to admit it).

China’s response only seemed to play into our fears. China had been investing in new long-range missiles, upgrading its navy, and began using its new muscle­ to claim disputed territory in the South China Sea. China has been playing more subtle games, too: blocking access to Google and The New York Times, and having hackers raid computers at a number of U.S. corporations, stealing trade secrets. Foreign-policy journals openly speculate about the possibility of war with China, a suggestion that U.S. officials dismiss as absurd. “If there is a war between the U.S. and China,” argues Cheng Li, director of the China program at the Brookings Institution, “it will not be over economics or security, it will be because of misjudgment and misunderstanding.”

Of course, even the most rabid warmongers realize that a war between the U.S. and China would be disastrous. That’s one reason why leaders on both sides are looking for common ground – and two of the biggest shared interests are climate and energy. “In a relationship fraught with tension, these are places where we can do business,” says Obama’s adviser Podesta.

On the flight to Beijing, there is a lot of talk about what that common ground between the U.S. and China might look like. Granted, climate catastrophe is bad for everyone. But what leverage does the U.S. really have over China? On a practical level, the Chinese would like access to American technology. (“The deal here is that the U.S. will let you buy lots of energy equipment at exorbitant prices,” jokes one journalist on the flight.) But the Chinese also understand that, given the GOP-held Congress, Obama doesn’t have the power to make any big future commitments to cut carbon pollution – and so why should they?

On a more human level, there’s also a lot of nervousness about China’s notorious difficulty as a negotiating partner. “China has a very top-down culture – you have to speak to people right at the top,” one of Kerry’s top advisers tells me. “And they are very motivated on climate, due to air-pollution issues. But it’s hard to get China to do hard things, in part because, unlike other Asian countries, doing things for the greater good is not a big motivation for them.”

The mismatch between the urgency of taking action and the self-destructive diddling of diplomacy is frightening to witness. A few weeks before heading to China with Kerry, I attended a UNFCCC climate conference in Bonn, Germany. The two-week-long meeting, one of several designed to begin mapping out an agreement for Paris next year, was held in the gray, bureaucratic-feeling Maritim Hotel near the banks of the Rhine and attended by nearly 2,000 delegates from more than 180 countries. But neither John Kerry nor Todd Stern was anywhere to be found; the U.S. delegation was headed by Trigg Talley, an affable white-haired man who is one of Stern’s deputies. If Bonn was a preview of how things will go next year in Paris, then you can kiss human civilization goodbye. Because nothing will get done. And if it appears that something might get done, you can be sure that somebody – most likely the Saudis, who are infamous for their ability to throw a monkey wrench into negotiations at the last minute – will do everything they can to derail it.

The sheer tedium of the discussions is difficult to capture, but let me try: During the plenary session on the final day, which was held in a conference room the size of a football field and was supposed to be where important breakthroughs were announced, I listened for hours to delegates from Singapore discuss the kind of formatting that should be used on the proposal and to delegates from Bolivia argue that bullet points should be used, not paragraph breaks. I never heard the words “carbon” or “greenhouse gas” in the entire session (although “adaptation” got tossed around a lot). The most memorable words were spoken by a delegate from South Africa: “We are sheep in need of herding.”

In Bonn, the stench of nearly 25 years of broken promises and failed agreements was palpable. The U.S. was viewed with particular skepticism and disdain, not just because the U.S. signed but then failed to ratify the Kyoto Protocol, but because until this administration, American presidents and congressional leaders never did anything intentional to substantively curb carbon pollution, despite the obvious impacts it would have on poorer nations. “You talk a lot, but you are not sincere,” one Turkish delegate sniffed to me. Trust in U.S. negotiators had been further undermined when documents made public by WikiLeaks and Edward Snowden revealed that the U.S. had been spying on negotiators from other countries before and during Copenhagen, trying to gain intelligence on their positions. The revelations were particularly damning given the good-faith nature of climate negotiations. “After almost 30 years of this kind of thing,” one longtime participant in these talks puts it, “what measure of trust can possibly exist? How do you strike a deal on issues that are central to your country’s survival with someone you think is out to screw you?”

Issues of trust aside, several things are immediately apparent to me in Bonn about the content and design of the agreement that is likely to emerge in Paris next year. One is that it is going to disappoint and anger a lot of people, particularly those who think the job of a climate treaty is to force big polluters to change their ways. The Paris agreement will largely be a “bottom up” treaty, in which each country will put forward a “contribution” for what each is willing to do to reduce carbon pollution. Those contributions will then be reviewed in the future – exactly how and by whom isn’t clear – to make sure each nation is keeping its promise. There will be no legally binding caps on emissions, no mandated “targets” that countries need to reach. In fact, it will not be a treaty at all (a treaty would need to be ratified by the U.S. Senate, which everyone knows will never happen). It will likely be an agreement “with legal force,” which means, basically, that some parts of the agreement might be legally binding in some countries.

However toothless this approach might seem, there is logic behind it. Since Kyoto, international climate efforts have largely failed because they were too prescriptive. Few nations were willing to bow to the demands of an international carbon police. And beyond that, there was no way to enforce carbon limits.

But even if the talks succeed in creating a sustainable basis for international cooperation, whatever emerges from Paris next year is extremely unlikely to put the world on a path that would limit warming to below 2 degrees Celsius (3.6 F), which was enshrined in the Copenhagen Accord as the threshold for dangerous climate change. For that to happen, says the Tyndall Centre’s Kevin Anderson, “global emissions from energy need to reach a peak by around 2020, and then rapidly reduce to zero by 2050 at the latest.” “I’m not giving up hope,” Kerry told me. “Physically, it’s possible. But politically, it will be very difficult.” Podesta is even more blunt. “If we wait until we have a binding international agreement that actually puts us on track for 2 C,” he says, “we’ll hit 2 C before we get an agreement. But we have to get started if we hope to get to the destination.”

The second revelation is that the Paris agreement is likely to be more about money than about carbon. That is not inappropriate: Climate change is, at its base, an environmental-justice issue, in which the rich nations of the world are inflicting damage on the poor ones. One question that has always haunted climate agreements is, how should the victims be compensated? In past U.N. agreements, developed countries have promised aid to poorer nations. But in translating these general commitments into hard numbers, says Elliot Diringer, a climate-policy expert at the Center for Climate and Energy Solutions, “the cash flows really have never been enough.”

In Paris, they will try again. The delivery vehicle of choice is called the Green Climate Fund, which was one of the few concrete accomplishments to come out of Copenhagen. The idea is simple: Rich countries pay into the fund, the fund’s 24-member board examines proposals from developing countries for clean-energy and climate-adaptation projects, and then it awards funds to those it finds worthy.

The Green Climate Fund was born in the closing days of the Copenhagen negotiations, when then-Secretary of State Hillary Clinton tried to lure China and other developing nations into a deal by promising that, in exchange for agreeing to a binding cap on carbon pollution as well as outside monitoring and verification of pollution rates, rich nations like the U.S. would pledge a combined $100 billion a year to help poor nations. Many negotiators thought it was a clever (or not so clever) ploy by the U.S. to make China take the fall for the collapse of the Copenhagen deal, since it was clear that China considers emissions data a state secret and would never allow outsiders to pore through the books. But regardless of the intentions, the deal fell apart. The $100 billion promise lingered, however, and was codified in later agreements. (Although $100 billion sounds like a lot, it’s a small part of the $1 trillion a year that will be necessary to transform the energy system.)

Right now, developed nations have a long way to go to live up to Clinton’s promise. The Green Climate Fund has taken four years to get up and running, and still nobody knows if it will primarily make loans or grants. So far, only Germany has come through with a meaningful pledge, offering $1 billion over the next nine years. Stern says the U.S. is putting “a lot of blood, sweat and tears” into getting the fund set up right, and that the $100 billion a year will come from a variety of sources, including private investment. But if the point of the fund is to demonstrate the commitment of rich nations to help the poor, it will need them to make real financial commitments. “Big new public funds are not viable,” says David Victor, a climate-policy expert at the University of California, San Diego. “This could be a train wreck of false expectations.”

In Bonn, the biggest question on many negotiator’s minds was, “Will China step up?” Despite the fact that China is the biggest carbon emitter on the planet, with the most dynamic economy in the world, the Chinese remain wedded to a 25-year-old idea that China is still a developing country, in the same category as, say, Uganda, and therefore not responsible for taking action. At least, not until the U.S. and the EU – which, with their cumulative emissions, have essentially caused the problem of global warming – take the first step. Among negotiators, China’s stance is widely viewed as a negotiating tactic to lower expectations for action and to allow it to play moral defender for other developing nations, some of whom fear that if China makes a big move, it will increase the pressure on them to do the same.

I got a preview of the kind of arguments U.S. negotiators will face when I bumped into Zou Ji, the deputy director general for the National Center for Climate Change Strategy and International Cooperation and a key member of the Chinese negotiating team, in the lobby of the Maritim Hotel. I asked him if the recent action by Obama to limit pollution from power plants and increase fuel-efficiency standards had changed the dynamics in the negotiations. “It is a good thing,” Ji told me. “But now, America says to us, ‘Your turn to step up.’ Well, we welcome what you have done, but we want to see more action from the U.S. first. It is very clear that Congress is a big constraint for you; Obama can only do what he can do.” Ji argues, accurately, that the U.S. is still the far richer country, and while China’s carbon emissions are enormous, if you break it down to per-capita emissions, the average American is responsible for dumping almost three times as much CO2 into the atmosphere every year as the average Chinese.

I point out to him that this is true, but that cumulative emissions in China will soon dwarf those in the United States.

“China needs to do its part, but right now the U.S. still has huge potential to do more,” he says forcefully. “I have lived in the U.S., where everyone has a clothes dryer and an air conditioner and a big refrigerator and a big house and a big car. In the EU and Japan, they also live well, but people there only consume half the energy Americans do. You do have the capacity to live at the same standard and consume far less – if you choose.”

When Kerry’s plane lands in Beijing, we immediately jump into a line of SUVs and are whisked away to the Great Wall just north of the city for what one State Department staffer calls “a little cultural sightseeing.” When I visited the wall a few years ago, the air pollution was so bad, I could hardly see 15 feet in front of me; today, it’s clear enough to see the Xishan Mountains, which are 12 miles away at the western edge of the city. Kerry strolls along the wall with Chinese dignitaries, then we motorcade to the Marriott hotel in central Beijing, where the U.S. government has taken over two floors. Security is high: The entrance to the hotel is blocked, and armed agents are everywhere. The biggest concern seems to be Chinese spies; on an earlier trip to China, five members of Todd Stern’s team received spoof e-mails that contained a bot that could have given a hacker control of their computers, and shortly after I check into my hotel, I am told that I can assume my room is bugged and my e-mail is read. Across the street from the hotel is an Apple Store, Gucci, Hermès and, strangely, a coal-fired power plant with clouds and a blue sky painted on the sides, as if to disguise the dirty black rocks burning within.

The next morning, Chinese President Xi Jinping opens the talks at the Diaoyutai State Guesthouse, an elegant retreat in western Beijing. His address to 500 or so American and Chinese dignitaries isn’t exactly a rousing call to action on climate change. Instead, he talks about the importance of keeping the Chinese economy humming, declaring that China needs a peaceful and stable environment “more than ever.” Xi is a tough-looking guy with a Tony Soprano vibe, and his speech leaves no doubt that he sees China as the rising power. “It is natural that China and the U.S. may have different views, and even frictions, on certain issues,” he says. Then he adds, “Confrontation between China and the United States would definitely spell disaster for the two countries and for the wider world.” Xi only mentions climate change once, in a passing reference to it as a significant challenge that both nations face.

Protestors take to the streets in China

Protestors take to the streets to fight construction of a chemical factory in May 2013. (Photo: AFP/Getty Images)

Xi, who came to power in 2013, is “a very strong leader for China,” says Cheng Li of the Brookings Institution. Li contrasts him with other recent Chinese leaders, most of whom tended to be pale figures who dutifully rose through the ranks of the Communist Party. Xi, who is 61, rules with authority and efficiency. He grew up the son of a deputy prime minister and revolutionary who was known as an architect of China’s special economic zones, which were important drivers in the liberalization of China. As president, Xi has cracked down on corruption and is a fierce defender of Chinese interests in disputed territories like the South China Sea. He has also toughened up China’s internal security forces (China spends more on domestic security than it does on national defense). But U.S. officials who have had close contact with Xi are impressed by his directness. One White House staffer pointed to a recent agreement to reduce hydrofluorocarbons, a potent greenhouse gas, that Xi worked out with Obama last year. “Xi rolled the Chinese bureaucracy to get that done,” the staffer says. Kerry also sees him as an effective leader. “I had long conversations with Xi while I was chair of the Foreign Relations Committee,” he tells me. “The kind of action we’ve seen in China recently doesn’t happen without his personal commitment.”

When Kerry takes the podium after Xi steps down, he is conciliatory. He reassures Xi and other Chinese leaders in the room that the U.S. does not seek to “contain” China, and that it welcomes the emergence of “a peaceful, prosperous China that . . . chooses to play a responsible role in world affairs.” He, too, talks a lot about economic growth and how “the true measure of our success will not be just whether our countries grow, but how our countries grow.” Kerry continues, “Step by step, we are shifting our focus . . . to the inescapable reality of a clean-energy future.”

When Kerry travels to countries where the U.S. might be perceived to have the upper hand, he can be very blunt about the potential ravages of climate change. A few months ago, in a speech in Jakarta, Indonesia, he called it the “world’s most fearsome” weapon of mass destruction. But Kerry doesn’t say a word here about melting ice caps, rising seas or weapons of mass destruction. Instead, he talks about how clean energy is “the biggest market the world has ever seen.” He talks investment flows, technology sharing and pollution-free prosperity. “Our goal,” Podesta tells me, “is to create a virtuous circle in the Pacific, where they match our ambition, and then we match theirs.”

For the U.S., pushing for action is imperative: If China makes an aggressive move on carbon, it kills a favorite political talking point from climate deniers in Congress. “I can’t tell you how many meetings I’ve sat in where the subject of ‘What is China doing?’ comes up,” says Podesta. “For us, it’s important that we take that objection off the table.”

For the Chinese, beyond the obvious motivation to clean up the air, the question is what they want from the U.S. in return. As Kerry put it to me later, “The Chinese have a lot of stuff they want from us. We have natural gas. We have coal. We have clean-energy technology.” How this bargaining works out is the heart of the negotiations and gets into complex areas like protection of intellectual property rights. In the past, the Chinese simply wanted to buy our technology, copy it and manufacture it more cheaply than anyone else. “But that dynamic has changed,” says one Department of Energy official. “Now the deals are much more about joint ventures and shared investment.”

Later in the day, top members of the U.S. and China delegations meet in a conference room on the second floor for the Joint Session on Climate Change and Clean Energy. It is a stiffly formal scene, with Kerry, Podesta, Stern, U.S. Energy Secretary Moniz and science adviser John Holdren on one side of a long mahogany table, and Chinese leaders, including Vice Premier Wang Yang and lead climate negotiator Xie Zhenhua, on the other side. In this more intimate group, the Chinese are much blunter and more forthright about the risks of climate change. But it isn’t clear if this is because they feel more relaxed or because they are more willing to say what the U.S. wants to hear. State Councilor Yang, who opens the discussion, calls climate change “a common and grave challenge to mankind.” He talks about actions the Chinese government has taken to promote clean energy and efficiency, and he underscores China’s support of the UNFCCC climate negotiations. “We have also maintained close dialogue in consultation on [the U.S.’s and China’s] respective climate-change policies,” he says.

Kerry nods politely and then reads from prepared remarks: “Every one of us in this room is well aware that the climate crisis is one that respects no border. It’s transboundary. It affects the planet.”

The Chinese leaders listen carefully, just as the American team listened carefully to Yang’s remarks, attuned to nuances and gestures that gain trust or lose it, that show respect or haughtiness. And yet, I get the strong sense at this meeting, and at every other one I’ve attended, that 15 levels of chess are being played, that the motives and impulses of each side remain unknowable to the other, and that both sides are making calculations that will shape their careers, their economies and the future of the planet. And always the fear – expressed in the glint of an eye, a moment of hesitation – that each is being played. The Chinese worry that the U.S. won’t keep their word or has a secret plan to thwart their economic growth; the Americans worry that the Chinese are using shady data, and that they are only in it for the money.

Sometimes, the enormous gap between how the Chinese run their country and how the Americans run theirs reveals itself. One of those moments occurs on the second day of the talks in the Great Hall of the People in Tiananmen Square, which is China’s parliamentary chamber. Kerry and Yang appear at a press conference to bestow six “EcoPartnership” awards to American and Chinese organizations that are collaborating on clean-energy and climate solutions. In the context of the talks, it is a small-bore event, with a handful of dignitaries and some Chinese press.

But maybe because of this, Kerry’s remarks at the event are looser and less diplomatic than anything I’ve heard him say earlier. They are also more dangerous politically, because he talks about the one thing the Chinese leadership is most afraid of: the power of social activism. He describes how, in 1970, after 20 million Americans attended Earth Day rallies, public outrage led to the creation of the Environmental Protection Agency, as well as the passage of the Clean Air Act and, later, the Clean Water Act. “So I have seen the power of grassroots action, of local efforts becoming magnified and ultimately creating action at a larger, federal level,” Kerry says, his voice rising. “And I see that same kind of drive, that same kernel of innovation, and of demand for a difference, right here [in China], today.”

Kerry’s larger point is undoubtedly true – there is a rising consciousness of environmental issues in China, a sense that civilized societies don’t let their rivers catch fire. But as Kerry knows very well, there will be no organized demonstrations of millions of people marching on the streets in China, demanding change. If they tried, they would likely be tear-gassed or thrown in jail. Activism, such as it is in China, is either well-behaved and sanctioned by the state, or it is deemed reckless and dangerous and quickly shut down.

After his remarks at the Great Hall of the People, Kerry gets polite applause and then sits down to listen to a boilerplate speech from Yang. If anyone noticed that the secretary of state of the United States had just suggested that a populist movement in the People’s Republic of China could challenge the status quo, it wasn’t apparent.

One person who understands the dangers of social activism as well as anyone is Shuo Li, 27, a climate-policy officer for Greenpeace East Asia. Shortly after Kerry’s talk, I visited Li at Greenpeace’s office in Beijing. A year earlier, Greenpeace had published an investigation into the development of a coal-to-liquids plant in Inner Mongolia. Transforming coal into liquid fuels like diesel (or, in a similar process, natural gas) is expensive and, more importantly, an environmental disaster. Compared with typical refining processes, coal liquefaction produces 14 times the amount of carbon dioxide.

What’s interesting about Greenpeace’s investigation is that it targeted the owner of the plant, Shenhua Group, which is China’s biggest coal producer and a political powerhouse. (“Shenhua is the monster,” Li says.) In the U.S., enviros go after big companies all the time. But in China, this kind of action is unprecedented. As was its effectiveness. Li says the company called in Greenpeace, and Shenhua agreed to quit pumping out groundwater for use in the plant.

I ask Li if this is a sign that Chinese leaders are becoming more tolerant of environmental activism?

“Maybe a little,” Li says. He explains that unlike, say, publicly celebrating the Dalai Lama or arguing for the ethical treatment of the Uighur minority in China, it’s OK to raise questions about environmental problems. “But you have to do it the right way. You can go after local officials or individual power plants.” But, as he points out, there is no clear line between what is acceptable and what is not. “That is something everyone has to discover for themselves,” he says. He adds with a sly smile: “For the government, it is more effective that way.”

But Li knows he’s treading dangerous ground. In 2012, a 65-year-old former forestry official was threatened with five years in prison for publishing and distributing books that questioned the overdevelopment of Hainan Island in southern China. (He received a three-year suspended sentence and a fine.) Two years earlier, one of Beijing’s most respected science reporters, Fang Xuanchang, who earned a reputation for calling bullshit on many government-funded research projects, was brutally beaten on his way home from work. His assailants were never found. The message, as one journalist wrote in Foreign Policy, was clear: “Don’t go there, or you could be next.”

I asked about the rising number of protests around the country against industrial plants found to be dumping chemicals­ into rivers, or protesters throwing bricks at police to halt the construction of a new power plant. “Individual NIMBY actions are acceptable,” Li says. “But when you try to mobilize people on a larger scale, that is when you get in trouble.”

“Trouble, how?”

“You don’t even want to think about it,” Li answers, fear flashing in his eyes.

The rise of China, which was driven by the biggest and fastest industrial revolution the world has ever seen, was fueled almost entirely by coal. And its continued success – not to mention, in many ways, the fate of human civilization – depends on how quickly it can wean itself off this cheap, dirty, abundant fossil fuel. “The big question,” Moniz told me in Beijing, “is how fast they can bend down the curve of coal.”

“Bending down the curve of coal” is geek-speak for reducing dependency on coal. Because coal – by far the most carbon­intensive fossil fuel – will most likely be replaced by cleaner energy sources; in that case, the moment China’s coal consumption plateaus will also be the moment their greenhouse-gas pollution plateaus. And that could be the moment the world begins a transition toward a stable climate.

But the question is: When will that moment occur? In China, this question will not be answered by the invisible hand of the market but, ultimately, by the strong hand of President Xi and other party leaders. Xi and his advisers will make a complex economic and political calculation about how far they want to push clean energy – and whether they want to encourage a shift away from coal by, say, expanding the existing carbon-trading market, passing a straightforward tax on carbon, or simply issuing a dictum that caps the amount of coal the nation can consume. A few weeks before my conversation with Moniz, a respected Chinese academic had speculated that China would cap coal consumption by 2030. “That would be a big step in the right direction,” Gore told me. But as Gore well knows, unless that cap is followed by a radical and almost unimaginable global shift toward zero-carbon energy, it’s not a big enough step to avert climate chaos in the coming decades.

China has already taken a number of measures to move away from coal. It is reportedly closing down 50,000 small coal-fired furnaces and has essentially stopped building new coal plants in big eastern cities like Beijing and Shanghai. In 2020, burning coal will be banned in Beijing. But given the enormity of China’s coal addiction, these are just baby steps compared to what is needed.

And that’s one reason why the Chinese are very interested in natural gas. Natural gas has about half the carbon of coal, and burning it creates much less air pollution. China has the biggest shale-gas reserves in the world and would dearly like to unleash an American-style fracking boom (which is its own kind of environmental nightmare, of course). But the technology used to extract the gas from shale, which was invented in the U.S., is complex and not easy to replicate. In addition, shale gas in China is more deeply buried than in the U.S., and the soil is less porous, making the gas more difficult to extract. And thanks to methane leaks during fracking operations (methane, the principal component of natural gas, is a short-lived but potent greenhouse gas), the climate benefits of natural gas are questionable.

Imagining a fracked-out China is not pretty, but it might beat the alternative – making natural gas out of coal. The process is similar to the coal-to-liquids plant in Inner Mongolia that Greenpeace singled out, and like that process, it is both water- and carbon-intensive. China already has two coal-to-gas plants in operation, with as many as 48 more on the drawing board. Most of them are slated to be built in western China, far from population centers, where Chinese leaders are eager to spur development and provide jobs. But the cost to the atmosphere will be enormous. If all of these plants get built, they will collectively emit more than a billion tons of CO2 each year – more than the entire nation of Germany emitted last year.

Moniz calls coal-to-gas plants in western China “a major issue” for Chinese and U.S. negotiators. “Burning natural gas may help them solve the problem of air pollution,” says Moniz. “But if they get it by manufacturing it from coal, they will be creating another, much larger problem.” And it’s one that impacts everyone on the planet.

The talks ended on a hot, humid afternoon in the Zhongnanhai compound in central Beijing, which houses offices for the Politburo’s most senior members. The compound, which is heavily guarded and closed to the public, is a reminder of China’s Imperial era, with a collection of traditional pavilions scattered around three lovely lakes. Kerry met with Chinese Premier Li Keqiang in the Purple Light Pavilion, a brightly painted pagoda-style building with small porcelain animals on the corners of the roof. Li has none of the bluster – or power – of President Xi, and after exchanging greetings and thank-yous, Kerry seemed eager to hit the road. They spoke in private for a half-hour, then Kerry climbed back into his SUV, and we motorcaded back to the Marriott for a final press conference.

Within minutes, the State Department was e-mailing a list of accomplishments to reporters, including joint U.S.-China demonstration projects on smart grids, technology to capture carbon from coal plants, and new initiatives on forestry and industrial boilers. It was all both important and unimportant, small steps in a long, long march. Later, Kerry would tell me he was impressed by what he’d seen from the Chinese on climate during the trip – “There was no backsliding,” he says. Others on the U.S. team described their sense that key Chinese leaders they’d met were “extraordinarily forward-leaning.”

But huge questions still loom about how far the U.S. and China and every other big polluter on the planet will go to cut emissions. For negotiators who are pushing for a tough agreement with meaningful reductions and clear financial accounting, the biggest fear is not that the U.S. and China won’t agree on key issues, but that they will agree on too much: “We are afraid that the U.S. and China will strike a bargain that makes them both comfortable, but does little or nothing to reduce the risk of climate change,” says Mohamed Adow, senior adviser for Christian Aid, a U.K.-based relief agency that works in many developing nations. “Then the rest of the world will have to decide if they want to go along, or fight for a stronger agreement.”

A few hours later, Kerry and his team jet off to Afghanistan. The world is a big, complicated place, and everyone – even the most committed climate warriors like Kerry – has a lot of other things to think about beyond how much carbon we are dumping into the atmosphere. And that, in a way, is always the problem: There is always something more urgent, more immediately catastrophic to seize the attention of policymakers – and in the coming years, many of the crises that will distract us from dealing with the realities of climate change will largely have been caused by climate change. Through all these short-term emergencies, the Earth will keep warming, the droughts will get worse, food will grow scarce, ice will vanish, the seas will rise, and starting around 2030, climate change will emerge from the background and eventually become the only thing we talk about. It will be the story of the century.

When we get to the Marriott, I walk across the sleek marble lobby with Podesta, who looks uncharacteristically somber. Just before we step into Kerry’s press conference – where he will again underscore the importance of taking action on climate change – I ask Podesta if two days of talks with the Chinese have made him feel more hopeful about Paris next year.

“Yes,” he says. “But it’s going to be a hard road.”

From The Archives Issue 1218: September 25, 2014

Read more: http://www.rollingstone.com/politics/news/china-the-climate-and-the-fate-of-the-planet-20140915#ixzz3Dckfhurq
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Cúpula do Clima da ONU: só teatro ou fatos concretos? (IPS)

17/9/2014 – 01h38

por Thalif Deen, da IPS

cumbreclima Cúpula do Clima da ONU: só teatro ou fatos concretos?

Nações Unidas, 17/9/2014 – A tão comentada Cúpula do Clima, que acontecerá no final deste mês, é apresentada como um dos grandes acontecimentos político-ambientais da Organização das Nações Unidas (ONU) para 2014. Seu secretário-geral, Ban Ki-moon, pediu aos mais de 120 governantes e empresários que participarão da cúpula de um único dia, 23 de setembro, que anunciem iniciativas significativas e substanciais, com promessas de fundos incluídas, “para ajudar o mundo a avançar por um caminho que limite o aquecimento global”.

Segundo a ONU, a cúpula será a primeira ocasião em cinco anos em que os líderes do mundo se reunirão para discutir o que se classifica de desastre ecológico: a mudança climática. Entre as repercussões negativas do aquecimento global estão a elevação do nível do mar, padrões climáticos extremos, acidificação dos oceanos, derretimento de geleiras, extinção de espécies da biodiversidade e ameaças à segurança alimentar mundial, alerta a organização.

Mas o que se pode esperar realmente da conferência deste mês, que provavelmente não durará mais do que 12 horas?

“Um acontecimento de um dia não poderá nunca resolver tudo o que se relaciona com a mudança climática, mas pode ser um ponto de inflexão para demonstrar renovada vontade política de agir”, opinou Timothy Gore, diretor de políticas e pesquisa da campanha Crecede Oxfam International. Alguns líderes políticos aproveitarão a ocasião para fazer isso, mas muitos “parecem decididos a se manterem afastados dos compromissos transformadores necessários”, acrescentou.

Segundo Gore, a cúpula foi pensada como uma plataforma para os novos compromissos de ação em matéria climática, mas existe o risco real de estes não serem grande coisa. “O enfoque colocado nas iniciativas voluntárias em lugar dos resultados negociados significa que não há garantias de que os anúncios que forem feitos na cúpula serão suficientemente sólidos”, acrescentou.

Espera-se que o Fundo Verde para o Clima mobilize cerca de US$ 100 bilhões anuais no Sul em desenvolvimento até 2020, segundo a ONU, mas este ainda não recebeu os fundos que serão entregues aos países em desenvolvimento para que possam implantar suas ações climáticas.

“No dia 23 de setembro veremos como os líderes mundiais não estão à altura do que necessitamos para lidar com a perigosa mudança climática”, apontou à IPS Dipti Bhatnagar, da Amigos da Terra Internacional e da Justiça Ambiental, de Moçambique. As “promessas” que os governos e as empresas farão na Cúpula do Clima serão extremamente insuficientes para abordar a catástrofe climática, ressaltou a ativista.

“A ideia de os governantes assumirem compromissos voluntários e não vinculantes é um insulto para centenas de milhares de pessoas que morrem a cada ano pelos impactos da mudança climática”, afirmou Bhatnagar. “Necessitamos que os países industrializados assumam objetivos de redução de emissões equitativos, ambiciosos e vinculantes, não um desfile de governantes que querem causar boa impressão. Mas este desfile falso é só o que vamos ver nesta cúpula de um dia”, opinou.

No dia 21, dois dias antes da cúpula, centenas de milhares de pessoas farão uma manifestação contra a mudança climática em cidades de todo o mundo. “Nesse dia, estaremos nas ruas de Nova York como parte da maior marcha climática na história, que enviará uma mensagem forte e clara para que os líderes mundiais ajam agora”, explicou Martin Kaiser, líder do projeto Política Climática Mundial, do Greenpeace.

Kaiser sugeriu que as empresas devem anunciar datas concretas a partir das quais operarão com 100% de energia renovável. Além disso, “os governos devem se comprometer a eliminar gradualmente os combustíveis fósseis até 2050 e tomar medidas concretas, como acabar com o financiamento das centrais elétricas movidas a carvão”, destacou. “Também esperamos que os governos anunciem dinheiro novo e adicional para o Fundo Verde para o Clima, a fim de ajudar os países vulneráveis a se adaptarem aos desastres climáticos”, afirmou.

“Precisamos que o Norte industrial entregue fundos públicos seguros, previsíveis e obrigatórios ao Sul em desenvolvimento por intermédio do sistema da ONU”, disse Bhatnagar, da Amigos da Terra Internacional. Os líderes dos países industrializados estão descuidando de sua responsabilidade para evitar as catástrofes climáticas, impulsionados pelos estreitos interesses econômicos e financeiros das elites ricas, da indústria dos combustíveis fósseis e das corporações transnacionais, acrescentou.

“O que se necessita para deter a mudança climática são objetivos de redução de emissões equitativos, ambiciosos e vinculantes dos países desenvolvidos, junto com a transferência de fundos e tecnologia aos países em desenvolvimento. Também precisamos de uma completa transformação de nossos sistemas de energia e alimentos”, enfatizou Bhatnagar.

Nesse sentido, é preciso maior transparência para decidir se os anúncios feitos são coerentes com as últimas conclusões científicas sobre o clima e se protegem os interesses dos mais vulneráveis diante dos impactos climáticos, detalhou Gore. Com relação ao papel do setor privado, “precisamos que os empresários combatem a mudança climática, e estão surgindo bons exemplos de empresas que estão à altura da ocasião”, acrescentou .

No setor de alimentos e bebidas, por exemplo, a Oxfam trabalhou com companhias como Kellogg e General Mills para que estas assumam compromissos de redução das emissões de suas cadeias de fornecimento agrícola, extremamente contaminantes. “Mas, em geral, essa cúpula mostra que há muitas partes do setor privado que ainda não estão à altura, já que as iniciativas que serão apresentadas não cumprem com a  transformação que precisamos”, destacou Gore.

“Isso serve para recordarmos a importância fundamental que tem a forte liderança governamental na mudança climática. As iniciativas voluntárias de baixo para cima não são um substituto da ação real do governo”, afirmou Gore. Envolverde/IPS

(IPS)

Climate Change News – September 16, 2014 (DISCCRS)

NEWS

UN says CO2 pollution levels at annual record high – Associated Press – September 9, 2014 – http://bigstory.ap.org/article/un-says-co2-pollution-levels-annual-record-high

Greenhouse Gas Pollution Sees Fastest Rise – ClimateWire (via Scientific American) – September 9, 2014 – http://www.scientificamerican.com/article/greenhouse-gas-pollution-sees-fastest-rise/

NASA Ranks This August as Warmest on Record – Climate Central – September 15, 2014 – http://www.climatecentral.org/news/nasa-globe-warmest-august-18031

Study finds warming Atlantic temperatures could increase range of invasive species – NOAA Press Release (via AAAS EurekAlert) – September 15, 2014 – http://www.eurekalert.org/pub_releases/2014-09/nh-sfw091214.php

Has the great climate change migration already begun? – Vital Signs (Guardian) – September 15, 2014 – http://www.theguardian.com/vital-signs/2014/sep/15/climate-change-refugees-un-storms-natural-disasters-sea-levels-environment

Grassroots pressure needed to beat climate change and poverty – experts – Thomson Reuters Foundation – September 12, 2014 – http://www.trust.org/item/20140912161513-2y17m/?source=fiOtherNews3

Princeton University launches NSF-funded initiative to study Southern Ocean’s role in global systems – NSF Press Release 14-117 – September 9, 2014 – http://www.nsf.gov/news/news_summ.jsp?cntn_id=132638&WT.mc_id=USNSF_51&WT.mc_ev=click

Warmer air caused ice shelf collapse off Antarctica – Reuters – September 11, 2014 – http://www.reuters.com/article/2014/09/11/us-climatechange-antarctica-idUSKBN0H625T20140911

Illegal deforestation is growing problem for climate – Climate News Network – September 12, 2014 – http://www.climatenewsnetwork.net/2014/09/illegal-deforestation-is-growing-problem-for-climate/

Brazil confirms Amazon deforestation sped up in 2013 – Reuters – September 10, 2014 – http://www.reuters.com/article/2014/09/10/us-brazil-deforestation-rise-idUSKBN0H528V20140910

Climate Change Threatens Half of North America?s Birds – Climate Central – September 13, 2014 – http://www.climatecentral.org/news/north-americas-birds-climate-change-18023

Ozone Layer on Track to Recovery – United Nations Environment Programme/World Meteorological Organization Press Release – September 10, 2014 – http://montreal-protocol.org/Assessment_Panels/SAP/SAP2014_ADM_Press_Release_10-Sept-2014.pdf

FORUM

Water management in Iran: what is causing the looming crisis? – Journal of Environmental Studies and Sciences (via Springer) – August 23, 2014 – By Kaveh Madani – http://link.springer.com/article/10.1007%2Fs13412-014-0182-z

Moral Collapse in a Warming World – Ethics & International Affairs, 28, no. 3 (2014), pp. 335-342 – By Clive Hamilton – http://journals.cambridge.org/download.php?file=%2FEIA%2FEIA28_03%2FS0892679414000409a.pdf&code=f0a65c732192dd3bbb451e4f5abcf862

The 97% v the 3% ? just how much global warming are humans causing? – Climate Consensus – the 97% blog (Guardian) – September 15, 2014 – By Dana Nuccitelli – http://www.theguardian.com/environment/climate-consensus-97-per-cent/2014/sep/15/97-vs-3-how-much-global-warming-are-humans-causing

UN Climate Summit must show climate change action is in everyone’s interests – Guardian Professional – September 11, 2014 – By Simon Zadek and Nick Robins – http://www.theguardian.com/sustainable-business/2014/sep/11/un-climate-summit-climate-change-interests-business-governments-finance

The Guardian view on the unchanging message from climate scientists – Guardian Editorial – September 14, 2014 – http://www.theguardian.com/commentisfree/2014/sep/14/guardian-view-unchanging-message-climate-scientists

Can Humans Get Used to Having a Two-Way Relationship with Earth?s Climate? – Dot Earth blog (New York Times) – September 10, 2014 – By Andrew Revkin – http://dotearth.blogs.nytimes.com/2014/09/10/can-humans-get-used-to-having-a-two-way-relationship-with-earths-climate/?_php=true

Naomi Klein: ?We tried it your way and we don?t have another decade to waste? – Guardian – September 14, 2014 – By Suzanne Goldenberg – http://www.theguardian.com/books/2014/sep/14/naomi-klein-interview-capitalism-vs-the-climate

World on track to be 4C warmer by 2100 because of missed carbon targets (The Guardian)

Concerns about the short term costs and impacts of investment to address risks is paralysing action on climate changeJonathan Grant

Guardian Professional, Monday 8 September 2014 13.28 BSTHeavy rains in Albuquerque, New Mexico

Heavy rains in Albuquerque, New Mexico. The top 10 destinations for the UK’s foreign direct investment experienced almost $100bn worth of extreme weather losses in 2013. Photograph: Roberto Rosales/AP

Global ambitions to reduce emissions are becoming a bit like the resolutions we make to give something up at new year: the intention is sincere, but we don’t always deliver.For the sixth successive year of the PwC Low Carbon Economy Index, the global carbon target has been missed. And inadequate action today means that even steeper reductions are needed in the future. The target is based on projections of economic growth and the global carbon budget set out by the Intergovernmental Panel on Climate Change (IPCC) which gives a reasonable probability of limiting warming to 2C.

Globally, annual reductions need to be five times current levels, averaging 6.2% a year, every year from now to 2100, compared with 1.2% today. At the national level, Australia is at the top of our decarbonisation league of G20 nations, followed by the UK. Both countries had a strong increase in renewable generation, albeit from a low base, combined with slight a reduction in coal use. The US was nearer the bottom as coal use bounced back, retaking a share of the electricity mix from shale gas.

The world is currently on track to burn this century’s IPCC carbon budget within 20 years, and a pathway to 4C of global warming by 2100. For many of us, 2034 is within our working lifetime. It’s within the timeframe of decisions being made today, on long-term investments, on the location of factories and their supply chains. So businesses are making those decisions faced with uncertainty about climate policy and potential impacts of climate change.

It is clear that the gap between what governments are saying about climate change and what they are doing about it continues to widen. While they talk about two degrees at the climate negotiations, the current trend is for a 4C world.

There is little mention of these two degrees of separation in the negotiations, in policy documents, in business strategies or in board rooms. Operating in a changing climate is becoming a very real challenge for UK plc. Some of the biggest names in business are mapping the risks posed by a changing climate to their supply chain, stores, offices and people.

But while the findings question the reality of the 2C target in negotiations, consider two situations in the analysis that demonstrates the strong case for the negotiations’ role in focusing everyone on co-ordinated action on climate change.

First, our analysis shows that the top 10 destinations for the UK’s foreign direct investment in 2011 were exposed to almost $100bn worth of extreme weather losses in 2013. Multi-billion pound UK investments are wrapped up in transport, technology, retail, food and energy sectors, making this an issue on everyone’s doorstep.

Second, co-ordinated, ambitious action to tackle emissions growth should protect business in the long term. It could even be a boost to growth. It would avoid inevitable short-term decisions that may look attractive, such as shutting down a steel operation in a country with a high cost of carbon to move it to another with a lower cost, but merely relocate emissions. And take jobs with them.

The concern about short-term costs and impacts on investment is paralysing our ability to address the long-term climate risks. Perhaps competitiveness is the new climate scepticism. Businesses call for a level playing field on carbon pricing, when it should be seen in the wider context of labour and energy prices, the skills market and wider legislative environment.

There’s a danger when we talk in small numbers – whether they are one or two degrees, or the 6% now required in annual decarbonisation (every year for the next 66 years, by the way), that they sound manageable. The 6% figure is double the rate the UK achieved when we dashed for gas in the 1990s. A shale gas revolution might help, but would need to be accompanied by a revolution in carbon capture and storage and revolutions in renewables, in electric transport, in industrial processes and in our buildings.

The UK’s results are encouraging, even if they fall short of the overall target necessary. Leadership in low carbon for the UK is down in part to policies and investment, partly the structure of our economy, and partly traditional factors such as skills and education. But it’s notable that while the Low Carbon Economy Index shows that the UK’s carbon intensity is lower than many, it is still higher than in France, Argentina or Brazil. It’s a neat encapsulation of a view of the world through a low carbon economy lens, not just a GDP one. The UK’s competitiveness or attractiveness today needs investment to hold on to it for tomorrow.

Jonathan Grant is director, sustainability and climate change, PwC

How conversion of forests to cropland affects climate (Science Daily)

Date: September 8, 2014

Source: Yale School of Forestry & Environmental Studies

Summary: The conversion of forests into cropland worldwide has triggered an atmospheric change to emissions of biogenic volatile organic compounds that — while seldom considered in climate models — has had a net cooling effect on global temperatures, according to a new study.


Since the mid-19th century, the percentage of the planet covered by cropland has more than doubled, from 14 percent to 37 percent. Credit: © Dusan Kostic / Fotolia 

The conversion of forests into cropland worldwide has triggered an atmospheric change that, while seldom considered in climate models, has had a net cooling effect on global temperatures, according to a new Yale study.

Writing in the journal Nature Climate Change, Professor Nadine Unger of the Yale School of Forestry & Environmental Studies (F&ES) reports that large-scale forest losses during the last 150 years have reduced global emissions of biogenic volatile organic compounds (BVOCs), which control the atmospheric distribution of many short-lived climate pollutants, such as tropospheric ozone, methane, and aerosol particles.

Using sophisticated climate modeling, Unger calculated that a 30-percent decline in BVOC emissions between 1850 and 2000, largely through the conversion of forests to cropland, produced a net global cooling of about 0.1 degrees Celsius. During the same period, the global climate warmed by about 0.6 degrees Celsius, mostly due to increases in fossil fuel carbon dioxide emissions.

According to her findings, the climate impact of declining BVOC emissions is on the same magnitude as two other consequences of deforestation long known to affect global temperatures, although in opposing ways: carbon storage and the albedo effect. The lost carbon storage capacity caused by forest conversion has exacerbated global warming. Meanwhile, the disappearance of dark-colored forests has also helped offset temperature increases through the so-called albedo effect. (The albedo effect refers to the amount of radiation reflected by the surface of the planet. Light-colored fields, for instance, reflect more light and heat back into space than darker forests.)

Unger says the combined effects of reduced BVOC emissions and increased albedo may have entirely offset the warming caused by the loss of forest-based carbon storage capacity.

“Land cover changes caused by humans since the industrial and agricultural revolutions have removed natural forests and grasslands and replaced them with croplands,” said Unger, an assistant professor of atmospheric chemistry at F&ES. “And croplands are not strong emitters of these BVOCs — often they don’t emit any BVOCs.”

“Without doing an earth-system model simulation that includes these factors, we can’t really know the net effect on the global climate. Because changes in these emissions affect both warming and cooling pollutants,” she noted.

Unger said the findings do not suggest that increased forest loss provides climate change benefits, but rather underscore the complexity of climate change and the importance of better assessing which parts of the world would benefit from greater forest conservation.

Since the mid-19th century, the percentage of the planet covered by cropland has more than doubled, from 14 percent to 37 percent. Since forests are far greater contributors of BVOC emissions than crops and grasslands, this shift in land use has removed about 30 percent of Earth’s BVOC sources, Unger said.

Not all of these compounds affect atmospheric chemistry in the same way. Aerosols, for instance, contribute to global “cooling” since they generally reflect solar radiation back into space. Therefore, a 50 percent reduction in forest aerosols has actually spurred greater warming since the pre-industrial era.

However, reductions in the potent greenhouse gases methane and ozone — which contribute to global warming — have helped deliver a net cooling effect.

These emissions are often ignored in climate modeling because they are perceived as a “natural” part of Earth system, explained Unger. “So they don’t get as much attention as human-generated emissions, such as fossil fuel VOCs,” she said. “But if we change how much forest cover exists, then there is a human influence on these emissions.”

These impacts have also been ignored in previous climate modeling, she said, because scientists believed that BVOC emissions had barely changed between the pre-industrial era and today. But a study published last year by Unger showed that emissions of these volatile compounds have indeed decreased. Studies by European scientists have produced similar results.

The impact of changes to ozone and organic aerosols are particularly strong in temperate zones, she said, while methane impacts are more globally distributed.

The sensitivity of the global climate system to BVOC emissions suggests the importance of establishing a global-scale long-term monitoring program for BVOC emissions, Unger noted.

 

Journal Reference:

  1. Nadine Unger. Human land-use-driven reduction of forest volatiles cools global climate. Nature Climate Change, 2014; DOI: 10.1038/nclimate2347

No more pause: Warming will be non-stop from now on (New Scientist)

18:00 31 August 2014 by Michael Slezak

Enjoy the pause in global warming while it lasts, because it’s probably the last one we will get this century. Once temperatures start rising again, it looks like they will keep going up without a break for the rest of the century, unless we cut our greenhouse gas emissions.

The slowdown in global warming since 1997 seems to be driven by unusually powerful winds over the Pacific Ocean, which are burying heat in the water. But even if that happens again, or a volcanic eruption spews cooling particles into the air, we are unlikely to see a similar hiatus, according to two independent studies.

Masahiro Watanabe of the University of Tokyo in Japan and his colleagues have found that, over the past three decades, the natural ups and downs in temperature have had less influence on the planet’s overall warmth. In the 1980s, natural variability accounted for almost half of the temperature changes seen. That fell to 38 per cent in the 1990s and just 27 per cent in the 2000s.

Instead, human-induced warming is accounting for more and more of the changes from year to year, says Watanabe. With ever-faster warming, small natural variations have less impact and are unlikely to override the human-induced warming.

“The implication is that we will get fewer hiatus periods, or hiatus periods that last for a shorter period,” says Wenju Cai at the CSIRO in Melbourne, Australia, who wasn’t involved in the work.

Stop it

According to another recent study, the current hiatus may be our last for a while. Matthew England and his colleagues at the University of New South Wales in Sydney, Australia, tried to quantify the chance of another pause. “It’s looking to us that it’s probably going to be the last one that we’ll see in the foreseeable future,” says England.

Using 31 climate models, they showed that if emissions keep rising, the chance of a hiatus – a 10-year period with no significant warming – drops to virtually zero after 2030. The current hiatus will probably be followed by rapid warming as the heat trapped in the ocean escapes back into the atmosphere, so we are unlikely to get another decade of no warming before 2030. England believes it could be another century or more before the next hiatus.

But that could change if we slow greenhouse gas emissions now. If we can reach peak global emissions by 2040, the temperature rise will slow by the end of the century, and hiatus periods will become more likely.

Hiatuses can also be triggered by volcanic eruptions that spew particles into the air, reflecting sunlight away from Earth, as happened after the 1991 Mount Pinatubo eruption. But even if a volcano erupts it will make little difference. “After 2030, the rate of global warming is likely to be so fast that even large volcanic eruptions on the scale of Krakatoa are unlikely to drive a hiatus decade,” says team member Nicola Maher.

Journal references: Watanabe: Nature Climate Change, DOI: 10.1038/nclimate2355; Maher: Geophysical Research Letters, DOI: 10.1002/2014GL060527

United Nations predicts climate hell in 2050 with imagined weather forecasts (The Guardian)

‘Reports from the future’ warn of floods, storms and searing heat in campaign for climate change summit

The Guardian, Monday 1 September 2014 19.18 BST

Texas drought warning

Signs warning of drought and high temperatures in Texas. The UN has predicted climate hell by 2050. Photograph: Mike Stone/Reuters

The United Nations is warning of floods, storms and searing heat fromArizona to Zambia within four decades, as part of a series of imagined weather forecasts released on Monday for a campaign publicising a UN climate summit.

“Miami South Beach is under water,” one forecaster says in a first edition of “weather reports from the future“, a series set in 2050 and produced by companies including Japan’s NHK, the US Weather Channel and ARD in Germany.

The UN World Meteorological Organization, which invited well-known television presenters to make videos to be issued before the summit on 23 September, said the scenarios were imaginary but realistic for a warming world.

A Zambian forecaster, for instance, describes a severe heatwave and an American presenter says: “The mega-drought in Arizona has claimed another casualty.”

Some, however, show extreme change. One Bulgarian presenter shows a red map with temperatures of 50C (122F) – far above the temperature record for the country of 45.2C (113F) recorded in 1916.

Climate change is affecting the weather everywhere. It makes it more extreme and disturbs established patterns. That means more disasters; more uncertainty,” the UN secretary general, Ban Ki-moon, said in a statement.

Ban has asked world leaders to make “bold pledges” to fight climate change at the meeting in New York. The summit is meant as a step towards a deal by almost 200 nations, due by the end of 2015, to slow global warming.

A UN report last year concluded it is at least 95% probable that human activities, rather than natural variations in the climate, are the main cause of global warming since 1950.

Organização Mundial de Meteorologia lança série de vídeos sobre mudança climática (Fapesp)

Objetivo é sensibilizar sobre os impactos locais do aquecimento global; primeiro episódio prevê o tempo no Brasil no ano de 2050

05/09/2014

Agência FAPESP – A Organização Mundial de Meteorologia (OMM) lançou os primeiros episódios de uma série de vídeos com previsões do tempo projetadas para o ano de 2050. A primeira edição traz a previsão para o dia 8 de junho daquele ano no Brasil, apresentada por Claudia Celli, da RPC-TV, afiliada da TV Globo no Paraná.

O objetivo da iniciativa é sensibilizar as pessoas sobre os impactos locais das mudanças climáticas globais. Os vídeos trazem sempre apresentadores de televisão conhecidos em um determinado país – e os cenários são compatíveis com os projetados no quinto relatório do Painel Intergovernamental de Mudanças Climáticas (IPCC).

No caso do Brasil, a previsão é de muita chuva no sul do país e no oeste da Amazônia. A expectativa é que os níveis de chuva para o mês sejam superados em apenas alguns dias, aumentando o risco de inundações e deslizamentos. Para o Nordeste e o leste da Amazônia, a previsão é de seca.

O lançamento dos vídeos pela OMM ocorre em apoio ao pedido do secretário-geral da Organização das Nações Unidas (ONU), Ban Ki-moon, para que governos, empresários e líderes da sociedade civil concordem em agir para lidar com a mudança climática durante a cúpula climática da ONU, marcada para 23 de setembro, a fim de evitar que se concretizem as previsões dos piores cenários.

“A mudança climática está afetando o tempo em todo lugar. Isso torna o clima mais extremo e modifica os padrões estabelecidos. Isso significa mais desastres; mais incerteza”, diz Ban Ki-moon em uma mensagem no vídeo.

A edição sobre o Brasil traz ainda uma entrevista de Celli com José Marengo, pesquisador do Instituto Nacional de Pesquisas Espaciais (Inpe) e membro do Programa FAPESP de Pesquisa sobre Mudanças Climáticas Globais (PFPMCG).

“Nas regiões tropicais, em basicamente todo o Brasil, os aumentos de temperatura no fim do século poderão ultrapassar os 4º C. Em termos de chuva, o padrão muda um pouco. As previsões mostram reduções de chuva no leste da Amazônia e na região Nordeste e aumento de chuva no oeste da Amazônia e no extremo sul do Brasil”, afirma Marengo no vídeo.

“A resposta tem que ser imediata [às mudanças climáticas globais]. Nas próximas décadas tem que se chegar a um acordo internacional, tipo o Protocolo de Kyoto, para reduzir as emissões de gases de efeito estufa, porque reduzir essas emissões é a única forma de poder reduzir o aquecimento e reduzir os impactos à população”, acrescenta o pesquisador.

O vídeo com a previsão para o Japão também já está no ar. Nesta sexta-feira (05/09), será divulgado o boletim meteorológico para a Dinamarca.

Os outros países que terão vídeos sobre a previsão do tempo em 2050 são: Zâmbia, Burkina Faso, Estados Unidos, Bulgária, Filipinas, Bélgica, África do Sul, Islândia, Alemanha e Tanzânia.

Os vídeos podem ser assistidos em www.youtube.com/user/wmovideomaster www.wmo.int/media/climatechangeimpact.html

How the IPCC is sharpening its language on climate change (The Carbon Brief)

01 Sep 2014, 17:40

Simon Evans

Barometer | Shutterstock

The Intergovernmental Panel on Climate Change (IPCC) is sharpening the language of its latest draft synthesis report, seen by Carbon Brief.

Not only is the wording around how the climate is changing more decisive, the evidence the report references is stronger too, when compared to the  previous version published in 2007.

The synthesis report, due to be published on 2 November, will wrap up the IPCC’s fifth assessment (AR5) of climate change. It will summarise and draw together the information in IPCC reports on the science of climate change, its  impacts and the  ways it can be addressed.

We’ve compared a draft of the synthesis report with that published in 2007 to find out how they compare. Here are the key areas of change.

Irreversible impacts are being felt already

The AR5 draft synthesis begins with a decisive statement that human influence on the climate is “clear”, that recent emissions are the highest in history and that “widespread and consequential impacts” are already being felt.

This opening line shows how much has changed in the way the authors present their findings. In contrast, the 2007 report opened with a discussion of scientific progress and an extended paragraph on definitions.

There are also a couple of clear thematic changes in the 2014 draft. The first, repeated frequently throughout, is the idea that climate change impacts are already being felt.

For instance it says that the height of coastal floods has already increased and that climate-change-related risks from weather extremes such as heatwaves and heavy rain are “already moderate”.

These observations are crystallised in a long section on Article 2 of the UN’s climate change convention, which has been signed by every country of the world. Article 2 says that the objective of the convention is to avoid dangerous climate change.

The AR5 draft implies the world may already have failed in this task:

“Depending on value judgements and specific circumstances, currently observed impacts might already be considered dangerous for some communities.”

The second theme is a stronger emphasis on irreversible impacts compared to the 2007 version. The 2014 draft says:

“Continued emission of greenhouse gases will cause further warming and long-lasting changes in all components of the climate system, increasing the likelihood of severe, pervasive and irreversible impacts for people and ecosystems.”

It says that a large fraction of warming will be irreversible for hundreds to thousands of years and that the Greenland ice sheet will be lost when warming reaches between one and four degrees above pre-industrial temperatures. Current warming since pre-industrial times is about 0.8 degrees celsius.

In effect the report has switched tense from future conditional (“could experience”) to present continuous (“are experiencing”).  For instance it says there are signs that some corals and Arctic ecosystems “are already experiencing irreversible regime shifts” because of warming.

Stronger evidence than before

As well as these thematic changes in the use of language, the AR5 synthesis comes to stronger conclusions in many other areas.

This is largely because the scientific evidence has solidified in the intervening seven years, the IPCC says.

We’ve drawn together a collection of side-by-side statements so you can see for yourself how the conclusions have changed. Some of the shifts in language are subtle – but they are significant all the same.

IPCC Table With Logo

Source: IPCC AR4 Synthesis Report, draft AR5 Synthesis Report

Climate alarmism or climate realism?

The authors of the latest synthesis report seem to have made an effort to boost the impact of their words. They’ve used clearer and more direct language along with what appears to be a stronger emphasis on the negative consequences of inaction.

The language around relying on adaptation to climate change has also shifted. It now more clearly emphasises the need for mitigation to cut emissions, if the worst impacts of warming are to be avoided.

Some are bound to read this as an unwelcome excursion into advocacy. But others will insist it is simply a case of better presenting the evidence that was already there, along with advances in scientific knowledge.

Government representatives have the chance to go over the draft AR5 synthesis report with a fine toothcomb when they meet during 27-31 October.

Will certain countries try to tone down the wording, as they have been accused of doing in the past? Or will the new, more incisive language make the final cut?

To find out, tune in on 2 November when the final synthesis report will be published.

Southwest U.S. may face ‘megadrought’ this century (Science Daily)

Date: August 27, 2014

Source: Cornell University

Summary: Because of global warming, scientists say, the chances of the southwestern United States experiencing a decade long drought is at least 50 percent, and the chances of a “megadrought” — one that lasts over 30 years — ranges from 20 to 50 percent over the next century. 

Risk of megadrought in Southwestern U.S. Credit: Toby Ault, Cornell University; From “Assessing the risk of persistent drought using climate model simulations and paleoclimate data”

Because of global warming, scientists say, the chances of the southwestern United States experiencing a decade long drought is at least 50 percent, and the chances of a “megadrought” — one that lasts over 30 years — ranges from 20 to 50 percent over the next century.

The study by Cornell University, University of Arizona and U.S. Geological Survey researchers will be published in a forthcoming issue of the American Meteorological Society’s Journal of Climate.

“For the southwestern U.S., I’m not optimistic about avoiding real megadroughts,” said Toby Ault, Cornell assistant professor of earth and atmospheric sciences and lead author of the paper. “As we add greenhouse gases into the atmosphere — and we haven’t put the brakes on stopping this — we are weighting the dice for megadrought conditions.”

As of mid-August, most of California sits in a D4 “exceptional drought,” which is in the most severe category. Oregon, Arizona, New Mexico, Oklahoma and Texas also loiter between moderate and exceptional drought. Ault says climatologists don’t know whether the severe western and southwestern drought will continue, but he said, “With ongoing climate change, this is a glimpse of things to come. It’s a preview of our future.”

Ault said that the West and Southwest must look for mitigation strategies to cope with looming long-drought scenarios. “This will be worse than anything seen during the last 2,000 years and would pose unprecedented challenges to water resources in the region,” he said.

In computer models, while California, Arizona and New Mexico will likely face drought, the researchers show the chances for drought in parts of Washington, Montana and Idaho may decrease.

Beyond the United States, southern Africa, Australia and the Amazon basin are also vulnerable to the possibility of a megadrought. With increases in temperatures, drought severity will likely worsen, “implying that our results should be viewed as conservative,” the study reports.

“These results help us take the long view of future drought risk in the Southwest — and the picture is not pretty. We hope this opens up new discussions about how to best use and conserve the precious water that we have,” said Julia Cole, UA professor of geosciences and of atmospheric sciences.

The study, “Assessing the Risk of Persistent Drought Using Climate Model Simulations and Paleoclimate Data,” was also co-authored by Julia E. Cole, David M. Meko and Jonathan T. Overpeck of University of Arizona; and Gregory T. Pederson of the U.S. Geological Survey.

The National Science Foundation, National Center for Atmospheric Research, the U.S. Geological Survey and the National Oceanic and Atmospheric Administration funded the research.


Journal Reference:

  1. Toby R. Ault, Julia E. Cole, Jonathan T. Overpeck, Gregory T. Pederson, David M. Meko. Assessing the risk of persistent drought using climate model simulations and paleoclimate data. Journal of Climate, 2014; 140122102410007 DOI: 10.1175/JCLI-D-12-00282.1

How to Talk About Climate Change So People Will Listen (The Atlantic)

SEPTEMBER 2014

Environmentalists warn us that apocalypse awaits. Economists tell us that minimal fixes will get us through. Here’s how we can move beyond the impasse. 

Josh Cochran

Not long ago, my newspaper informed me that glaciers in the western Antarctic, undermined by the warmer seas of a hotter world, were collapsing, and their disappearance “now appears to be unstoppable.” The melting of these great ice sheets would make seas rise by at least four feet—ultimately, possibly 12—more than enough to flood cities from New York to Tokyo to Mumbai. Because I am interested in science, I read the two journal articles that had inspired the story. How much time do we have, I wondered, before catastrophe hits?

One study, in Geophysical Research Letters, provided no guidance; the authors concluded only that the disappearing glaciers would “significantly contribute to sea level rise in decades to centuries to come.” But the other, in Science, offered more-precise estimates: during the next century, the oceans will surge by as much as a quarter of a millimeter a year. By 2100, that is, the calamity in Antarctica will have driven up sea levels by almost an inch. The process would get a bit faster, the researchers emphasized, “within centuries.”

How is one supposed to respond to this kind of news? On the one hand, the transformation of the Antarctic seems like an unfathomable disaster. On the other hand, the disaster will never affect me or anyone I know; nor, very probably, will it trouble my grandchildren. How much consideration do I owe the people it will affect, my 40-times-great-grandchildren, who, many climate researchers believe, will still be confronted by rising temperatures and seas? Americans don’t even save for their own retirement! How can we worry about such distant, hypothetical beings?

In our ergonomic chairs and acoustical-panel cubicles, we sit cozy as kings atop 300 years of flaming carbon.

Worse, confronting climate change requires swearing off something that has been an extraordinary boon to humankind: cheap energy from fossil fuels. In the 3,600 years between 1800B.C. and 1800 A.D., the economic historian Gregory Clark has calculated, there was “no sign of any improvement in material conditions” in Europe and Asia. Then came the Industrial Revolution. Driven by the explosive energy of coal, oil, and natural gas, it inaugurated an unprecedented three-century wave of prosperity. Artificial lighting, air-conditioning, and automobiles, all powered by fossil fuels, swaddle us in our giddy modernity. In our ergonomic chairs and acoustical-panel cubicles, we sit cozy as kings atop 300 years of flaming carbon.

In the best of times, this problem—given its apocalyptic stakes, bewildering scale, and vast potential cost—would be difficult to resolve. But we are not in the best of times. We are in a time of legislative paralysis. In an important step, the Obama administration announced in June its decision to cut power-plant emissions 30 percent by 2030. Otherwise, this country has seen strikingly little political action on climate change, despite three decades of increasingly high-pitched chatter by scientists, activists, economists, pundits, and legislators.

The chatter itself, I would argue, has done its share to stall progress. Rhetorical overreach, moral miscalculation, shouting at cross-purposes: this toxic blend is particularly evident when activists, who want to scare Americans into taking action, come up against economists, with their cool calculations of acceptable costs. Eco-advocates insist that only the radical transformation of society—the old order demolished, foundation to roof—can fend off the worst consequences of climate change. Economists argue for adapting to the most-likely consequences; cheerleaders for industrial capitalism, they propose quite different, much milder policies, and are ready to let nature take a bigger hit in the short and long terms alike. Both envelop themselves in the mantle of Science, emitting a fug of charts and graphs. (Actually, every side in the debate, including the minority who deny that humans can affect the climate at all, claims the backing of Science.) Bewildered and battered by the back-and-forth, the citizenry sits, for the most part, on its hands. For all the hot air expended on the subject, we still don’t know how to talk about climate change.

As an issue, climate change was unlucky: when nonspecialists first became aware of it, in the 1990s, environmental attitudes had already become tribal political markers. As the Yale historian Paul Sabin makes clear in The Bet, it wasn’t always this way. The votes for the 1970 Clean Air Act, for example, were 374–1 in the House, 73–0 in the Senate. Sabin’s book takes off from a single event: a bet between the ecologist Paul R. Ehrlich and the economist Julian Simon a decade later. Ehrlich’s The Population Bomb (1968), which decried humankind’s rising numbers, was a foundational text in the environmental movement. Simon’s Ultimate Resource (1981) was its antimatter equivalent: a celebration of population growth, it awakened opposition to the same movement.

Activist led by Bill McKibben, the founder of 350.org, protest the building of the Keystone XL pipeline at the White House, February 2013. (AP)

Ehrlich was moderately liberal in his politics but unrestrained in his rhetoric. The second sentence of The Population Bomb promised that “hundreds of millions of people” would starve to death within two decades, no matter what “crash programs” the world launched to feed them. A year later, Ehrlich gave even odds that “England will not exist in the year 2000.” In 1974, he told Congress that “a billion or more people” could starve in the 1980s “at the latest.” When the predictions didn’t pan out, he attacked his critics as “incompetent” and “ignorant,” “morons” and “idiots.”

Simon, who died in 1998, argued that “human resourcefulness and enterprise” will extricate us from our ecological dilemma. Moderately conservative in his politics, he was exuberantly uninhibited in his scorn for eco-alarmists. Humankind faces no serious environmental problems, he asserted. “All long-run trends point in exactly the opposite direction from the projections of the doomsayers.” (All? Really?) “There is no convincing economic reason why these trends toward a better life should not continue indefinitely.” Relishing his role as a spoiler, he gave speeches while wearing red plastic devil horns. Unsurprisingly, he attracted disagreement, to which he responded with as much bluster as Ehrlich. Critics, motivated by “blatant intellectual dishonesty” and indifference to the poor, were “corrupt,” their ideas “ignorant and wrongheaded.”

In 1980, the two men wagered $1,000 on the prices of five metals 10 years hence. If the prices rose, as Ehrlich predicted, it would imply that these resources were growing scarcer, as Homo sapiens plundered the planet. If the prices fell, this would be a sign that markets and human cleverness had made the metals relatively less scarce: progress was continuing. Prices dropped. Ehrlich paid up, insisting disingenuously that he had been “schnookered.”

Schnookered, no; unlucky, yes. In 2010, three Holy Cross economists simulated the bet for every decade from 1900 to 2007. Ehrlich would have won 61 percent of the time. The results, Sabin says, do not prove that these resources have grown scarcer. Rather, metal prices crashed after the First World War and spent most of a century struggling back to their 1918 levels. Ecological issues were almost irrelevant.

The bet demonstrated little about the environment but much about environmental politics. The American landscape first became a source of widespread anxiety at the beginning of the 20th century. Initially, the fretting came from conservatives, both the rural hunters who established the licensing system that brought back white-tailed deer from near-extinction and the Ivy League patricians who created the national parks. So ineradicable was the conservative taint that decades later, the left still scoffed at ecological issues as right-wing distractions. At the University of Michigan, the radical Students for a Democratic Society protested the first Earth Day, in 1970, as elitist flimflam meant to divert public attention from class struggle and the Vietnam War; the left-wing journalist I. F. Stone called the nationwide marches a “snow job.” By the 1980s, businesses had realized that environmental issues had a price tag. Increasingly, they balked. Reflexively, the anticorporate left pivoted; Earth Day, erstwhile snow job, became an opportunity to denounce capitalist greed.

Climate change is a perfect issue for symbolic battle, because it is as yet mostly invisible.

The result, as the Emory historian Patrick Allitt demonstrates in A Climate of Crisis, was a political back-and-forth that became ever less productive. Time and again, Allitt writes, activists and corporate executives railed against each other. Out of this clash emerged regulatory syntheses: rules for air, water, toxins. Often enough, businesspeople then discovered that following the new rules was less expensive than they had claimed it would be; environmentalists meanwhile found out that the problems were less dire than they had claimed.

 

Throughout the 1980s, for instance, activists charged that acid rain from midwestern power-plant emissions was destroying thousands of East Coast lakes. Utilities insisted that anti-pollution equipment would be hugely expensive and make homeowners’ electric bills balloon. One American Electric Power representative predicted that acid-rain control could lead to the “destruction of the Midwest economy.” A 1990 amendment to the Clean Air Act, backed by both the Republican administration and the Democratic Congress, set up a cap-and-trade mechanism that reduced acid rain at a fraction of the predicted cost; electric bills were barely affected. Today, most scientists have concluded that the effects of acid rain were overstated to begin with—fewer lakes were hurt than had been thought, and acid rain was not the only cause.

Rather than learning from this and other examples that, as Allitt puts it, “America’s environmental problems, though very real, were manageable,” each side stored up bitterness, like batteries taking on charge. The process that had led, however disagreeably, to successful environmental action in the 1970s and ’80s brought on political stasis in the ’90s. Environmental issues became ways for politicians to signal their clan identity to supporters. As symbols, the issues couldn’t be compromised. Standing up for your side telegraphed your commitment to take back America—either from tyrannical liberal elitism or right-wing greed and fecklessness. Nothing got done.

As an issue, climate change is perfect for symbolic battle, because it is as yet mostly invisible. Carbon dioxide, its main cause, is not emitted in billowing black clouds, like other pollutants; nor is it caustic, smelly, or poisonous. A side effect of modernity, it has for now a tiny practical impact on most people’s lives. To be sure, I remember winters as being colder in my childhood, but I also remember my home then as a vast castle and my parents as godlike beings.

In concrete terms, Americans encounter climate change mainly in the form of three graphs, staples of environmental articles. The first shows that atmospheric carbon dioxide has been steadily increasing. Almost nobody disputes this. The second graph shows rising global temperatures. This measurement is trickier: carbon dioxide is spread uniformly in the air, but temperatures are affected by a host of factors (clouds, rain, wind, altitude, the reflectivity of the ground) that differ greatly from place to place. Here the data are more subject to disagreement. A few critics argue that for the past 17 years warming has mostly stopped. Still, most scientists believe that in the past century the Earth’s average temperature has gone up by about 1.5 degrees Fahrenheit.

Rising temperatures per se are not the primary concern. What matters most is their future influence on other things: agricultural productivity, sea levels, storm frequency, infectious disease. As the philosopher Dale Jamieson points out in the unfortunately titled Reason in a Dark Time, most of these effects cannot be determined by traditional scientific experiments—white-coats in laboratories can’t melt a spare Arctic ice cap to see what happens. (Climate change has no lab rats.) Instead, thousands of researchers refine ever bigger and more complex mathematical models. The third graph typically shows the consequences such models predict, ranging from worrisome (mainly) to catastrophic (possibly).

Such charts are meaningful to the climatologists who make them. But for the typical citizen they are a muddle, too abstract—too much like 10th-grade homework—to be convincing, let alone to motivate action. In the history of our species, has any human heart ever been profoundly stirred by a graph? Some other approach, proselytizers have recognized, is needed.

To stoke concern, eco-campaigners like Bill McKibben still resort, Ehrlich-style, to waving a skeleton at the reader. Thus the first sentence of McKibben’sOil and Honey, a memoir of his climate activism, describes 2011–12, the period covered by his book, as “a time when the planet began to come apart.” Already visible “in almost every corner of the earth,” climate “chaos” is inducing “an endless chain of disasters that will turn civilization into a never-ending emergency response drill.”

Bill McKibben says we must “start producing a nation of careful, small-scale farmers … who can adapt to the crazed new world with care and grace.”

The only solution to our ecological woes, McKibben argues, is to live simpler, more local, less resource-intensive existences—something he believes is already occurring. “After a long era of getting big and distant,” he writes, “our economy, and maybe our culture, has started to make a halting turn toward the small and local.” Not only will this shift let us avoid the worst consequences of climate change, it will have the happy side effect of turning a lot of unpleasant multinational corporations to ash. As we “subside into a workable, even beautiful, civilization,” we will lead better lives. No longer hypnotized by the buzz and pop of consumer culture, narcotized couch potatoes will be transformed into robust, active citizens: spiritually engaged, connected to communities, appreciative of Earth’s abundance.

For McKibben, the engagement is full throttle: The Oil half of his memoir is about founding 350.org, a group that seeks to create a mass movement against climate change. (The 350 refers to the theoretical maximum safe level, in parts per million, of atmospheric carbon dioxide, a level we have already surpassed.) The Honey half is about buying 70 acres near his Vermont home to support an off-the-grid beekeeper named Kirk Webster, who is living out McKibben’s organic dream in a handcrafted, solar-powered cabin in the woods. Webster, McKibben believes, is the future. We must, he says, “start producing a nation of careful, small-scale farmers such as Kirk Webster, who can adapt to the crazed new world with care and grace, and who don’t do much more damage in the process.”

Poppycock, the French philosopher Pascal Bruckner in effect replies in The Fanaticism of the Apocalypse. A best-selling, telegenic public intellectual (a species that hardly exists in this country), Bruckner is mainly going after what he calls “ecologism,” of which McKibbenites are exemplars. At base, he says, ecologism seeks not to save nature but to purify humankind through self-flagellating asceticism.

To Bruckner, ecologism is both ethnocentric and counterproductive. Ethnocentric because eco-denunciations of capitalism simply give new, green garb to the long-standing Euro-American fear of losing dominance over the developing world (whose recent growth derives, irksomely, from fossil fuels). Counterproductive because ecologism induces indifference, or even hostility to environmental issues. In the quest to force humanity into a puritanical straitjacket of rural simplicity, ecologism employs what should be neutral, fact-based descriptions of a real-world problem (too much carbon dioxide raises temperatures) as bludgeons to compel people to accept modes of existence they would otherwise reject. Intuiting moral blackmail underlying the apparently objective charts and graphs, Bruckner argues, people react with suspicion, skepticism, and sighing apathy—the opposite of the reaction McKibbenites hope to evoke.

The ranchers and farmers in Tony Horwitz’s Boom, a deft and sometimes sobering e-book, suggest Bruckner may be on to something. Horwitz, possibly best known for his study of Civil War reenactors, Confederates in the Attic, travels along the proposed path of the Keystone XL, a controversial pipeline intended to take oil from Alberta’s tar-sands complex to refineries in Steele City, Nebraska—and the project McKibben has used as the rallying cry for 350.org. McKibben set off on his anti-Keystone crusade after the climatologist-provocateur James Hansen charged in 2011 that building the pipeline would be “game over” for the climate. If Keystone were built, Hansen later wrote, “civilization would be at risk.” Everyone Horwitz meets has heard this scenario. But nobody seems to have much appetite for giving up the perks of industrial civilization, Kirk Webster–style. “You want to go back to the Stone Age and use only wind, sun, and water?” one person asks. A truck driver in the tar-sands project tells Horwitz, “This industry is giving me a future, even if it’s a short one and we’re all about to toast together.” Given the scale of the forces involved, individual action seems futile. “It’s going to burn up anyhow at the end,” explains a Hutterite farmer, matter-of-factly. “The world will end in fire.”

 

Whereas McKibbenites see carbon dioxide as an emblem of a toxic way of life, economists like William Nordhaus of Yale tend to view it as simply a by-product of the good fortune brought by capitalism. Nordhaus, the president of the American Economic Association, has researched climate issues for four decades. His The Climate Casino has an even, unhurried tone; a classic Voice of Authority rumbles from the page. Our carbon-dioxide issues, he says, have a “simple answer,” one “firmly based in economic theory and history”:

The best approach is to use market mechanisms. And the single most important market mechanism that is missing today is a high price on CO2 emissions, or what is called “carbon prices” … The easiest way is simply to tax CO2 emissions: a “carbon tax” … The carbon price [from the tax] will be passed on to the consumer in the form of higher prices.

Nordhaus provides graphs (!) showing how a gradually increasing tax—or, possibly, a market in emissions permits—would slowly and steadily ratchet down global carbon-dioxide output. The problem, as he admits, is that the projected reduction “assumes full participation.” Translated from econo-speak, “full participation” means that the Earth’s rich and populous nations must simultaneously apply the tax. Brazil, China, France, India, Russia, the United States—all must move in concert, globally cooperating.

To say that a global carbon tax is a simple answer is like arguing that the simple answer to death is repealing the Second Law of Thermodynamics.

Alas, nothing like Nordhaus’s planetary carbon tax has ever been enacted. The sole precedent is the Montreal Protocol, the 1987 treaty banning substances that react with atmospheric ozone and reduce its ability to absorb the sun’s harmful ultraviolet radiation. Signed by every United Nations member and successfully updated 10 times, the protocol is a model of international eco-cooperation. But it involves outlawing chemicals in refrigerators and spray cans, not asking nations to revamp the base of their own prosperity. Nordhaus’s declaration that a global carbon tax is a simple answer is like arguing that the simple answer to death is repealing the Second Law of Thermodynamics.

Does climate change, as Nordhaus claims, truly slip into the silk glove of standard economic thought? The dispute is at the center of Jamieson’s Reason in a Dark Time. Parsing logic with the care of a raccoon washing a shiny stone, Jamieson maintains that economists’ discussions of climate change are almost as problematic as those of environmentalists and politicians, though for different reasons.

Remember how I was complaining that all discussions of climate change devolve into homework? Here, sadly, is proof. To critique economists’ claims, Jamieson must drag the reader through the mucky assumptions underlying cost-benefit analysis, a standard economic tool. In the case of climate change, the costs of cutting carbon dioxide are high. What are the benefits? If the level of carbon dioxide in the atmosphere rises only slightly above its current 400 parts per million, most climatologists believe, there is (roughly) a 90 percent chance that global temperatures will eventually rise between 3 and 8 degrees Fahrenheit, with the most likely jump being between 4 and 5 degrees. Nordhaus and most other economists conclude that humankind can slowly constrain this relatively modest rise in carbon without taking extraordinary, society-transforming measures, though neither decreasing the use of fossil fuels nor offsetting their emissions will be cheap or easy. But the same estimates show (again in rough terms) a 5 percent chance that letting carbon dioxide rise much above its current level would set off a domino-style reaction leading to global devastation. (No one pays much attention to the remaining 5 percent chance that the carbon rise would have very little effect on temperature.)

In our daily lives, we typically focus on the most likely result: I decide whether to jaywalk without considering the chance that I will trip in the street and get run over. But sometimes we focus on the extreme: I lock up my gun and hide the bullets in a separate place to minimize the chance that my kids will find and play with them. For climate change, should we focus on adapting to the mostprobable outcome or averting the most dangerous one? Cost-benefit analyses typically ignore the most-radical outcomes: they assume that society has agreed to accept the small but real risk of catastrophe—something environmentalists, to take one particularly vehement section of society, have by no means done.

On top of this, Jamieson argues, there is a second problem in the models economists use to discus climate change. Because the payoff from carbon-dioxide reduction will occur many decades from now, Nordhausian analysis suggests that we should do the bare minimum today, even if that means saddling our descendants with a warmer world. Doing the minimum is expensive enough already, economists say. Because people tomorrow will be richer than we are, as we are richer than our grandparents were, they will be better able to pay to clean up our emissions. Unfortunately, this is an ethically problematic stance. How can we weigh the interests of someone born in 2050 against those of someone born in 1950? In this kind of trade-off between generations, Jamieson argues, “there is no plausible value” for how much we owe the future.

Given their moral problems, he concludes, economic models are much less useful as guides than their proponents believe. For all their ostensible practicality—for all their attempts to skirt the paralysis-inducing specter of the apocalypse—economists, too, don’t have a good way to talk about climate change.

Years ago, a colleague and I spoke with the physicist Richard Feynman, later a national symbol of puckish wit and brash truth-telling. At the frontiers of science, he told us, hosts of unclear, mutually contradictory ideas are always swarming about. Researchers can never agree on how to proceed or even on what is important. In these circumstances, Feynman said, he always tried to figure out what would take him forward no matter which theory eventually turned out to be correct. In this agnostic spirit, let’s assume that rising carbon-dioxide levels will become a problem of some magnitude at some time and that we will want to do something practical about it. Is there something we should do, no matter what technical arcanae underlie the cost-benefit analyses, no matter when we guess the bad effects from climate change will kick in, no matter how we value future generations, no matter what we think of global capitalism? Indeed, is there some course of action that makes sense even if we think that climate change isn’t much of a problem at all?

As my high-school math teacher used to say, let’s do the numbers. Roughly three-quarters of the world’s carbon-dioxide emissions come from burning fossil fuels, and roughly three-quarters of that comes from just two sources: coal in its various forms, and oil in its various forms, including gasoline. Different studies produce slightly different estimates, but they all agree that coal is responsible for more carbon dioxide than oil is—about 25 percent more. That number is likely to increase, because coal consumption is growing much faster than oil consumption.

Geo-engineering involves tinkering with planetary systems we only partially understand. But planet-hacking does have an overarching advantage: it’s cheap.​

Although coal and oil are both fossil fuels, they are used differently. In this country, for example, the great majority of oil—about three-quarters—is consumed by individuals, as they heat their homes and drive their cars. Almost all U.S. coal (93 percent) is burned not in homes but by electric-power plants; the rest is mainly used by industry, notably for making cement and steel. Cutting oil use, in other words, requires huge numbers of people to change their houses and automobiles—the United States alone has 254 million vehicles on the road. Reducing U.S. coal emissions, by contrast, means regulating 557 big power plants and 227 steel and cement factories. (Surprisingly, many smaller coal plants exist, some at hospitals and schools, but their contributions are negligible.) I’ve been whacking poor old Nordhaus for his ideas about who should pay for climate change, but he does make this point, and precisely: “The most cost-effective way to reduce CO2 emissions is to reduce the use of coal first and most sharply.” Note, too, that this policy comes with a public-health bonus: reining in coal pollution could ultimately avoid as many as 6,600 premature deaths and 150,000 children’s asthma attacks per year in the United States alone.

 

Different nations have different arrangements, but almost everywhere the basic point holds true: a relatively small number of industrial coal plants—perhaps 7,000 worldwide—put out an amazingly large amount of carbon dioxide, more than 40 percent of the global total. And that figure is rising; last year, coal’s share of energy production hit a 44-year high, because Asian nations are building coal plants at a fantastic rate (and, possibly, because demand for coal-fired electricity will soar as electric cars become popular). No matter what your views about the impact and import of climate change, you are primarily talking about coal. To my mind, at least, retrofitting 7,000 industrial facilities, however mind-boggling, is less mind-boggling than, say, transforming the United States into “a nation of careful, small-scale farmers” or enacting a global carbon tax with “full participation.” It is, at least, imaginable.

The focus of the Obama administration on reducing coal emissions suggests that it has followed this logic. If the pattern of the late 20th century still held, industry would reply with exaggerated estimates of the cost, and compromises would be worked out. But because the environment has become a proxy for a tribal battle, an exercise in power politics will surely ensue. I’ve given McKibben grief for his apocalyptic rhetoric, but he’s exactly correct that without a push from a popular movement—without something like 350.org—meaningful attempts to cut back coal emissions are much less likely to yield results.

Regrettably, 350.org has fixated on the Keystone pipeline, which the Congressional Research Service has calculated would raise this nation’s annual output of greenhouse gases by 0.05 to 0.3 percent. (James Hansen, in arguing that the pipeline would be “game over” for the climate, erroneously assumed that all of the tar-sands oil could be burned rapidly, instead of dribbling out in relatively small portions year by year, over decades.) None of this is to say that exploiting tar sands is a good idea, especially given the apparent violation of native treaties in Canada. But a popular movement focused on symbolic goals will have little ability to win practical battles in Washington.

If politics fail, the only recourse, says David Keith, a Harvard professor of public policy and applied physics, will be a technical fix. And soon—by mid-century. Keith is talking about geo-engineering: fighting climate change with more climate change. A Case for Climate Engineering is a short book arguing that we should study spraying the stratosphere with tiny glittering droplets of sulfuric acid that bounce sunlight back into space, reducing the Earth’s temperature. Physically speaking, the notion is feasible. The 1991 eruption of Mount Pinatubo, in the Philippines, created huge amounts of airborne sulfuric acid—and lowered the Earth’s average temperature that year by about 1 degree.

Keith is candid about the drawbacks. Not only does geo-engineering involve tinkering with planetary systems we only partially understand, it can’t cancel out, even in theory, greenhouse problems like altered rainfall patterns and increased ocean acidity. The sulfur would soon fall to the Earth, a toxic rain of pollution that could kill thousands of people every year. The carbon dioxide that was already in the air would remain. To continue to slow warming, sulfur would have to be lofted anew every year. Still, Keith points out, without this relatively crude repair, unimpeded climate change could be yet more deadly.

Planet-hacking does have an overarching advantage: it’s cheap. “The cost of geoengineering the entire planet for a decade,” Keith writes, “could be less than the $6 billion the Italian government is spending on dikes and movable barriers to protect a single city, Venice, from climate change–related sea level rise.”

That advantage is also dangerous, he points out. A single country could geo-engineer the whole planet by itself. Or one country’s geo-engineering could set off conflicts with another country—a Chinese program to increase its monsoon might reduce India’s monsoon. “Both are nuclear weapons states,” Keith reminds us. According to Forbes, the world has 1,645 billionaires, several hundred of them in nations threatened by climate change. If their businesses or homes were at risk, any one of them could single-handedly pay for a course of geo-engineering. Is anyone certain none of these people would pull the trigger?

Few experts think that relying on geo-engineering would be a good idea. But no one knows how soon reality will trump ideology, and so we may finally have hit on a useful form of alarmism. One of the virtues of Keith’s succinct, scary book is to convince the reader that unless we find a way to talk about climate change, planes full of sulfuric acid will soon be on the runway.

How to choose? (Aeon)

When your reasons are worse than useless, sometimes the most rational choice is a random stab in the dark

by Michael Schulson

Illustration by Tim McDonaghIllustration by Tim McDonagh

Michael Schulson is an American freelance writer. His work has appeared in Religion Dispatches, The Daily Beast, and Religion and Politics, among others. He lives in Durham, North Carolina.

We could start with birds, or we could start with Greeks. Each option has advantages.

Let’s flip a coin. Heads and it’s the Greeks, tails and it’s the birds.

Tails.

In the 1970s, a young American anthropologist named Michael Dove set out for Indonesia, intending to solve an ethnographic mystery. Then a graduate student at Stanford, Dove had been reading about the Kantu’, a group of subsistence farmers who live in the tropical forests of Borneo. The Kantu’ practise the kind of shifting agriculture known to anthropologists as swidden farming, and to everyone else as slash-and-burn. Swidden farmers usually grow crops in nutrient-poor soil. They use fire to clear their fields, which they abandon at the end of each growing season.

Like other swidden farmers, the Kantu’ would establish new farming sites ever year in which to grow rice and other crops. Unlike most other swidden farmers, the Kantu’ choose where to place these fields through a ritualised form of birdwatching. They believe that certain species of bird – the Scarlet-rumped Trogon, the Rufous Piculet, and five others – are the sons-in-law of God. The appearances of these birds guide the affairs of human beings. So, in order to select a site for cultivation, a Kantu’ farmer would walk through the forest until he spotted the right combination of omen birds. And there he would clear a field and plant his crops.

Dove figured that the birds must be serving as some kind of ecological indicator. Perhaps they gravitated toward good soil, or smaller trees, or some other useful characteristic of a swidden site. After all, the Kantu’ had been using bird augury for generations, and they hadn’t starved yet. The birds, Dove assumed, had to be telling the Kantu’something about the land. But neither he, nor any other anthropologist, had any notion of what that something was.

He followed Kantu’ augurers. He watched omen birds. He measured the size of each household’s harvest. And he became more and more confused. Kantu’ augury is so intricate, so dependent on slight alterations and is-the-bird-to-my-left-or-my-right contingencies that Dove soon found there was no discernible correlation at all between Piculets and Trogons and the success of a Kantu’ crop. The augurers he was shadowing, Dove told me, ‘looked more and more like people who were rolling dice’.

Stumped, he switched dissertation topics. But the augury nagged him. He kept thinking about it for ‘a decade or two’. And then one day he realised that he had been looking at the question the wrong way all the time. Dove had been asking whether Kantu’ augury imparted useful ecological information, as opposed to being random. But what if augury was useful precisely because it was random?

For the Kantu’, the best option was one familiar to any investor when faced with an unpredictable market: they needed to diversify

Tropical swidden agriculture is a fundamentally unpredictable enterprise. The success of a Kantu’ swidden depends on rainfall, pest outbreaks and river levels, among other factors. A patch of forest that might yield a good harvest in a rainy year could be unproductive in a drier year, or in a year when a certain pest spreads. And things such as pest outbreaks or the weather are pretty much impossible to predict weeks or months in the future, both for humans and for birds.

In the face of such uncertainty, though, the human tendency is to seek some kind of order – to come up with a systematic method for choosing a field site, and, in particular, to make decisions based on the conditions of the previous year.

Neither option is useful. Last year’s conditions have pretty much no bearing on events in the years ahead (a rainy July 2013 does not have any bearing on the wetness of July 2014). And systematic methods can be prey to all sorts of biases. If, for example, a Kantu’ farmer predicted that the water levels would be favourable one year, and so put all his fields next to the river, a single flood could wipe out his entire crop. For the Kantu’, the best option was one familiar to any investor when faced with an unpredictable market: they needed to diversify. And bird augury was an especially effective way to bring about that kind of diversification.

It makes sense that it should have taken Dove some 15 years to realise that randomness could be an asset. As moderns, we take it for granted that the best decisions stem from a process of empirical analysis and informed choice, with a clear goal in mind. That kind of decision-making, at least in theory, undergirds the ways that we choose political leaders, play the stock market, and select candidates for schools and jobs. It also shapes the way in which we critique the rituals and superstitions of others. But, as the Kantu’ illustrate, there are plenty of situations when random chance really is your best option. And those situations might be far more prevalent in our modern lives than we generally admit.

Over the millennia, cultures have expended a great deal of time, energy and ingenuity in order to introduce some element of chance into decision-making. Naskapi hunters in the Canadian province of Labrador would roast the scapula of a caribou in order to determine the direction of their next hunt, reading the cracks that formed on the surface of the bone like a map. In China, people have long sought guidance in the passages of the I Ching, using the intricate manipulation of 49 yarrow stalks to determine which section of the book they ought to consult. The Azande of central Africa, when faced with a difficult choice, would force a powdery poison down a chicken’s throat, finding the answer to their question in whether or not the chicken survived – a hard-to-predict, if not quite random, outcome. (‘I found this as satisfactory a way of running my home and affairs as any other I know of,’ wrote the British anthropologist E E Evans-Pritchard, who adopted some local customs during his time with the Azande in the 1920s).

The list goes on. It could – it does – fill books. As any blackjack dealer or tarot reader might tell you, we have a love for the flip of the card. Why shouldn’t we? Chance has some special properties. It is a swift, consistent, and (unless your chickens all die) relatively cheap decider. Devoid of any guiding mind, it is subject to neither blame nor regret. Inhuman, it can act as a blank surface on which to descry the churning of fate or the work of divine hands. Chance distributes resources and judges disputes with perfect equanimity.

The sanitising effect of augury cleans out any bad reasons

Above all, chance makes its selection without any recourse to reasons. This quality is perhaps its greatest advantage, though of course it comes at a price. Peter Stone, a political theorist at Trinity College, Dublin, and the author of The Luck of the Draw: The Role of Lotteries in Decision Making (2011), has made a career of studying the conditions under which such reasonless-ness can be, well, reasonable.

‘What lotteries are very good for is for keeping bad reasons out of decisions,’ Stone told me. ‘Lotteries guarantee that when you are choosing at random, there will be no reasons at all for one option rather than another being selected.’ He calls this the sanitising effectof lotteries – they eliminate all reasons from a decision, scrubbing away any kind of unwanted influence. As Stone acknowledges, randomness eliminates good reasons from the running as well as bad ones. He doesn’t advocate using chance indiscriminately. ‘But, sometimes,’ he argues, ‘the danger of bad reasons is bigger than the loss of the possibility of good reasons.’

For an example, let’s return to the Kantu’. Besides certain basic characteristics, when it comes to selecting a swidden site in the forest, there are no good reasons by which to choose a site. You just don’t know what the weather and pests will look like. As a result, any reasons that a Kantu’ farmer uses will either be neutral, or actively harmful. The sanitising effect of augury cleans out those bad reasons. The Kantu’ also establish fields in swampland, where the characteristics of a good site are much more predictable – where, in other words, good reasons are abundant. In the swamps, as it happens, the Kantu’ don’t use augury to make their pick.

Thinking about choice and chance in this way has applications outside rural Borneo, too. In particular, it can call into question some of the basic mechanisms of our rationalist-meritocratic-democratic system – which is why, as you might imagine, a political theorist such as Stone is so interested in randomness in the first place.

Around the same time that Michael Dove was pondering his riddle in a Kantu’ longhouse, activists and political scientists were beginning to revive the idea of filling certain political positions by lottery, a process known as sortition.

The practice has a long history. Most public officials in democratic Athens were chosen by lottery, including the nine archons who were chosen by sortition from a significant segment of the population. The nobles of Renaissance Venice used to select their head of state, the doge, through a complicated, partially randomised process. Jean-Jacques Rousseau, in The Social Contract (1762), argued that lotteries would be the norm in an ideal democracy, giving every citizen an equal chance of participating in every part of the government (Rousseau added that such ideal democracies did not exist). Sortition survives today in the process of jury selection, and it crops up from time to time in unexpected places. Ontario and British Columbia, for example, have used randomly selected panels of Canadian citizens to propose election regulations.

Advocates of sortition suggest applying that principle more broadly, to congresses and parliaments, in order to create a legislature that closely reflects the actual composition of a state’s citizenship. They are not (just to be clear) advocating that legislators randomly choosepolicies. Few, moreover, would suggest that non-representative positions such as the US presidency be appointed by a lottery of all citizens. The idea is not to banish reason from politics altogether. But plenty of bad reasons can influence the election process – through bribery, intimidation, and fraud; through vote-purchasing; through discrimination and prejudices of all kinds. The question is whether these bad reasons outweigh the benefits of a system in which voters pick their favourite candidates.

By way of illustration: a handful of powerful families and influential cliques dominated Renaissance Venice. The use of sortition in selection of the doge, writes the historian Robert Finlay in Politics in Renaissance Venice (1980), was a means of ‘limiting the ability of any group to impose its will without an overwhelming majority or substantial good luck’. Americans who worry about unbridled campaign-spending by a wealthy few might relate to this idea.

Or consider this. In theory, liberal democracies want legislatures that accurately reflect their citizenship. And, presumably, the qualities of a good legislator (intelligence, integrity, experience) aren’t limited to wealthy, straight, white men. The relatively homogeneous composition of our legislatures suggests that less-than-ideal reasons are playing a substantial role in the electoral process. Typically, we just look at this process and wonder how to eliminate that bias. Advocates of sortition see conditions ripe for randomness.

Once all good reasons are eliminated, the most efficient, most fair and most honest option might be chance

It’s not only politics where the threat of bad reasons, or a lack of any good reasons, makes the luck of the draw seem attractive. Take college admissions. When Columbia University accepts just 2,291 of its roughly 33,000 applicants, as it did this year, it’s hard to imagine that the process was based strictly on good reasons. ‘College admissions are already random; let’s just admit it and begin developing a more effective system,’ wrote the education policy analyst Chad Aldeman on the US daily news site Inside Higher Ed back in 2009. He went on to describe the notion of collegiate meritocracy as ‘a pretension’ and remarked: ‘A lottery might be the answer.’

The Swarthmore College professor Barry Schwartz, writing in The Atlantic in 2012, came to a similar conclusion. He proposed that, once schools have narrowed down their applicant pools to a well-qualified subset, they could just draw names. Some schools in the Netherlands already use a similar system. ‘A lottery like this won’t correct the injustice that is inherent in a pyramidal system in which not everyone can rise to the top,’ wrote Schwartz. ‘But it will reveal the injustice by highlighting the role of contingency and luck.’ Once certain standards are met, no really good reasons remain to discriminate between applicant No 2,291 (who gets into Columbia) and applicant No 2,292 (who does not). And once all good reasons are eliminated, the most efficient, most fair and most honest option might be chance.

But perhaps not the most popular one. When randomness is added to a supposedly meritocratic system, it can inspire quite a backlash. In 2004, the International Skating Union (ISU) introduced a new judging system for figure-skating competitions. Under this system – which has since been tweaked – 12 judges evaluated each skater, but only nine of those votes, selected at random, actually counted towards the final tally (the ancient Athenians judged drama competitions in a similar way). Figure skating is a notoriously corrupt sport, with judges sometimes forming blocs that support each other’s favoured skaters. In theory, a randomised process makes it harder to form such alliances. A tit-for-tat arrangement, after all, doesn’t work as well if it’s unclear whether your partners will be able to reciprocate.

But the new ISU rules did more than simply remove a temptation to collude. As statisticians pointed out, random selection will change the outcome of some events. Backing their claims with competition data, they showed how other sets of randomly selected votes would have yielded different results, actually changing the line-up of the medal podium in at least one major competition. Even once all the skaters had performed, ultimate victory depended on the luck of the draw.

There are two ways to look at this kind of situation. The first way – the path of outrage – condemns a system that seems fundamentally unfair. A second approach would be to recognise that the judging process is already subjective and always will be. Had a different panel of 12 judges been chosen for the competition, the result would have varied, too. The ISU system simply makes that subjectivity more apparent, even as it reduces the likelihood that certain obviously bad influences, such as corruption, will affect the final result.

Still, most commentators opted for righteous outrage. That isn’t surprising. The ISU system conflicts with two common modern assumptions: that it is always desirable (and usually possible) to eliminate uncertainty and chance from a situation; and that achievement is perfectly reflective of effort and talent. Sortition, college admission lotteries, and randomised judging run against the grain of both of these premises. They embrace uncertainty as a useful part of their processes, and they fail to guarantee that the better citizen or student or skater, no matter how much she drives herself to success, will be declared the winner.

Let me suggest that, in the fraught and unpredictable world in which we live, both of those ideals – total certainty and perfect reward – are delusional. That’s not to say that we shouldn’t try to increase knowledge and reward success. It’s just that, until we reach that utopia, we might want to come to terms with the reality of our situation, which is that our lives are dominated by uncertainty, biases, subjective judgments and the vagaries of chance.

In the novel The Man in the High Castle (1962), the American sci-fi maestro Philip K Dick imagines an alternative history in which Germany and Japan win the Second World War. Most of the novel’s action takes place in Japanese-occupied San Francisco, where characters, both Japanese and American, regularly use the I Ching to guide difficult decisions in their business lives and personal affairs.

Something, somewhere, is always playing dice

As an American with no family history of divination, I’ll admit to being enchanted by Dick’s vision of a sci-fi world where people yield some of their decision-making power to the movements of dried yarrow stems. There’s something liberating, maybe, in being able to acknowledge that the reasons we have are often inadequate, or downright poor. Without needing to impose any supernatural system, it’s not hard to picture a society in which chance plays a more explicit, more accepted role in the ways in which we distribute goods, determine admissions to colleges, give out jobs to equally matched applicants, pick our elected leaders, and make personal decisions in our own lives.

Such a society is not a rationalist’s nightmare. Instead, in an uncertain world where bad reasons do determine so much of what we decide, it’s a way to become more aware of what factors shape the choices we make. As Peter Stone told me, paraphrasing Immanuel Kant, ‘the first task of reason is to recognise its own limitations’. Nor is such a society more riddled with chanciness than our own. Something, somewhere, is always playing dice. The roles of coloniser and colonised, wealthy and poor, powerful and weak, victor and vanquished, are rarely as predestined as we imagine them to be.

Dick seems to have understood this. Certainly, he embraced chance in a way that few other novelists ever have. Years after he wrote The Man in the High Castle, Dick explained to an interviewer that, setting aside from planning and the novelist’s foresight, he had settled key details of the book’s plot by flipping coins and consulting the I Ching.

14 July 2014

Se falta água, o problema é de planejamento, diz especialista (Projeto 2000 e água)

22/7/2014 – 01h21

por Projeto 2000 e água

represa Se falta água, o problema é de planejamento, diz especialista

 

O planejamento do uso de recursos hídricos é fundamental, como aponta o professor da USP, na entrevista abaixo. Porém, é preciso ter em mente que a água que, apesar de ser comum dizer que a Terra é o planeta água, apenas 2,5% desse recurso na Terra é doce – ou seja, pode ser usado para consumo próprio. A maior parte dela está aprisionada em aquíferos subterrâneos e geleiras. Só 0,26% da água doce da Terra está em lagos, reservatórios e bacias hidrográficas, mais acessíveis ao homem e a atividades econômicas. Isso significa dizer que apenas 0,0065% da água na Terra é água doce disponível. Em resumo: se toda a água da Terra coubesse em um balde de 10 litros, a água doce disponível chegaria a apenas 13 gotas. (Comentário do Akatu)

Segundo dados da Comissão Pastoral da Terra, o Brasil tem um conflito violento por dia por causa da água. Muitas destas disputas ocorrem para evitar a apropriação de recursos hídricos por empresas ou para impedir a construção de barragens. Em março deste ano, foi a vez dos governos de Rio e São Paulo entrarem em atrito. Sob pressão da crise de abastecimento, o governo paulista pediu ao governo federal o desvio das águas do rio Paraíba do Sul, que nasce em São Paulo e também corta cidades mineiras e fluminenses.

Diante deste cenário de tensão, veículos de comunicação não pouparam manchetes anunciando uma “guerra por água”. Para o professor de Geografia da USP Luis Antonio Bittar Venturi, no entanto, a mídia é “fatalista” quando coloca a escassez como origem dos conflitos. “A água é o recurso mais abundante do planeta. Se existe falta d’água em alguns lugares, isto é problema de planejamento”, afirma. Confira a seguir os melhores trechos da entrevista, do projeto 2000 e água:

Luis 300x197 Se falta água, o problema é de planejamento, diz especialista

Como você avalia o discurso de veículos de comunicação que anunciam escassez e guerra por água?

A mídia é muito fatalista. Vende-se mais se você anunciar fome, conflito e guerra. Thomas Malthus dizia que o mundo vai passar fome porque a produção de alimentos é mais lenta que o crescimento da população. Essa é uma afirmação que não considera que o planejamento e a técnica podem reverter isso. É a mesma coisa com a água. Falar que ela vai acabar é um tremendo absurdo. A água doce vem do oceano, via evaporação e precipitação. Esse é um sistema que nunca vai acabar, a não ser que a Terra acabe.

Se a água é um recurso abundante, por que estamos passando por uma crise hídrica na Região Metropolitana de São Paulo?

É falta de planejamento a médio e longo prazo. Em São Paulo, o clima é tropical úmido, então a recarga de água vinda do Oceano está assegurada. A recarga é muito maior do que a água que conseguimos usar, só que, por uma questão de mau planejamento, há muita demanda concentrada nas metrópoles. Além disso, falta incorporar no planejamento dados científicos, que existem e estão disponíveis. Mas o poder público prefere culpar a natureza.

A falta d’água em São Paulo gerou a polêmica do desvio do Rio Paraíba do Sul para abastecer o Sistema Cantareira, gerando um conflito entre os governos de Rio e São Paulo. Isso, para você, não seria um conflito por falta de água?

Uma bacia hidrográfica é um sistema integrado e deve ser gerida por inteiro, independentemente de quantos Estados a compartilhem. Internamente aos países existem conflitos, mas eles são usados como bandeira política, porque tem forte apelo emocional: “Ah, São Paulo está roubando a água”, o que é uma besteira. A água é o recurso mais abundante no planeta. Se existe falta d’água em alguns lugares, isto é problema de planejamento.

Que mudanças no planejamento ajudariam a resolver o problema?

Fazer a interligação dos sistemas Cantareira com Alto Cotia e Guarapiranga. Enquanto o Sistema Cantareira estava com 11% da sua capacidade, o Alto Cotia estava com 77%! Não é falta d’água! Outro ponto: o volume de perda na distribuição na SABESP é acima de 30%, devido a ligações clandestinas e vazamentos. Resolver isto seria como produzir 30% a mais de água. Além destas questões, só agora há um sistema para usar o volume morto dos reservatórios, que é meramente uma questão técnica.

No Brasil 34 milhões de pessoas não têm acesso à água potável. Como você avalia esse cenário?

A água, embora seja o recurso mais abundante do mundo, não se distribui de forma equitativa pelo globo. Então, cabe ao homem planejar. Toda vez que há uma população acometida pela escassez hídrica, a culpa é o problema social, e não um problema natural.

Parte do problema de acesso também é reflexo das diferenças sociais?

Há dois tipos de escassez. O chamado estresse hídrico natural é quando um lugar não tem água mesmo, mas você pode resolver isso de alguma forma, como os dessalinizadores usados na Península Arábica. E o estresse socioeconômico, que ocorre em locais de pobreza e sem um planejamento adequado. É uma irracionalidade de planejamento na Amazônia haver problemas de saúde e alta taxa de mortalidade infantil por falta de acesso a água de qualidade. As embarcações que levam mercadorias de Manaus para o interior da Amazônia estão apilhadas de garrafões de água mineral comprados.

Há algo que esteja sendo feito?

Existe um projeto do Governo Federal de construção de cisternas em casas de comunidades rurais da região Nordeste, e que está, de fato, fazendo grande diferença na vida desta população. Então, se isso for suficiente, basta. Agora, para você desenvolver a agricultura, é necessário mais do que isto. Aí é preciso transposição do rio São Francisco, da qual eu sou a favor. É tirar 1% de sua água para tornar perenes as bacias que são intermitentes. Depende do contexto. Não há uma fórmula que sirva para todas as regiões.

Os mais de 70% de água destinada à agricultura não fazem falta para outros setores?

Essa é uma média mundial. A agricultura é o setor que mais consome água. Mas ela nem sempre é potável. No interior do Brasil, a água é bombeada diretamente do Rio. Já na Síria há em todo lugar duas torneiras: uma que você pode beber e outra que você não pode. A que você não pode beber é usada para limpeza e a água de reuso também vai para a agricultura.Quanto ao uso doméstico, é preciso ter um mínimo assegurado. O mínimo mesmo, que em uma situação crítica são 100 m³/ ano por habitante, e que é a situação natural de vários países, principalmente na Península Arábica. Mas eles conseguem, por meio do planejamento e da técnica, ter um abastecimento per capita do mesmo nível de alguns países europeus e de lugares que têm bastante água.

Você é otimista nas perspectivas de que o Brasil vá se atentar mais à questão do planejamento hídrico?

Eu tendo a ser. O problema é que a gente sempre corre atrás do prejuízo. Precisa vir uma crise de abastecimento para a Sabesp e o governo do Estado acordarem. Mas o ideal seria um planejamento mais eficiente e adequado, que evitasse a necessidade de passar por períodos de racionamento de água e energia.

Leia aqui a reportagem hipermídia que retrata crise de água em São Paulo.

* Publicado originalmente no site 200 e água e retirado do site Akatu.

(Akatu)

Mudanças climáticas de longo prazo provocam mais migrações do que os desastres naturais (O Globo)

JC e-mail 4976, de 24 de junho de 2014

Aumento da temperatura é a principal razão de deslocamentos

Quatro meses atrás, o vulcão Sinabung entrou em erupção na Indonésia, esvaziando as aldeias vizinhas, cobertas de cinzas. Cerca de 100 mil pessoas deixaram suas casas, mas a grande maioria voltou semanas depois. Esse é um retrato de como um desastre natural espanta uma população sem afugentá-la definitivamente. Agora, um estudo das universidades americanas de Princeton e Califórnia e do Escritório Nacional de Pesquisa Econômica dos Estados Unidos afirma que as mudanças climáticas, que ocorrem a longo prazo, provocam mais migrações do que as catástrofes isoladas.

Segundo os pesquisadores, a temperatura e o índice de chuvas são os principais motivadores para as migrações definitivas. Com o avanço dos eventos extremos nas próximas décadas, cada vez mais áreas vão se tornar inabitáveis, e o contingente dos chamados refugiados climáticos deve explodir.

No estudo, publicado na revista “Proceedings of the National Academy of Sciences”, os cientistas acompanharam por 15 anos o deslocamento de sete mil famílias da Indonésia. O país, que é o maior arquipélago do mundo, tem uma população de cerca de 250 milhões de pessoas. Aproximadamente 40% dependem da agricultura, e muitos vivem em áreas costeiras. São regiões altamente vulneráveis ao aumento do nível do mar e outros efeitos ligados às mudanças climáticas.

DESERTIFICAÇÃO É OUTRA CAUSA
Com base nos registros, a pesquisa mostrou que o número de refugiados climáticos é maior em locais onde cresceu a temperatura média do país, que é de 25,1 graus Celsius. Segundo o estudo, isso ocorreu porque o aumento dos termômetros compromete o rendimento das culturas agrícolas. As chuvas teriam um papel mais tímido nas migrações definitivas.

Vice-presidente do Painel Intergovernamental de Mudanças Climáticas, Suzana Kahn concorda com os resultados do estudo.

– Uma população pode acreditar que um episódio isolado, como um vulcão, logo vai se resolver – lembra Suzana, que também é professora da Coppe/UFRJ. – Mas as mudanças climáticas vão obrigar que estas pessoas se retirem definitivamente de suas regiões. É um fenômeno já visto nos pequenos países do Pacífico, que já negociam uma migração definitiva para a Nova Zelândia, por causa do aumento do nível do mar.

A desertificação no Norte da África também provoca a migração de milhares de pessoas para o Sul da Europa. Esse deslocamento tem levado ao crescimento de legendas de extrema-direita, hostis à chegada dos refugiados climáticos.

– A migração de grandes populações também tem consequências econômicas – ressalta Suzana. – Na Europa, por exemplo, a resistência aos africanos é grande porque eles aceitam condições de trabalho muito desfavoráveis. No Ártico, o derretimento de geleiras proporciona a escavação de novos poços de petróleo, o que atrairia muitas pessoas e empresas.

(Renato Grandelle / O Globo)
http://oglobo.globo.com/sociedade/ciencia/mudancas-climaticas-de-longo-prazo-provocam-mais-migracoes-do-que-os-desastres-naturais-12988197#ixzz35ZVsrLCU

Maio de 2014 foi o mais quente do mundo desde 1880 (AFP)

JC e-mail 4976, de 24 de junho de 2014

A temperatura média na superfície terrestre e dos oceanos atingiu 15,54 graus Celsius em maio, isto é, 0,74°C a mais que a média de 14,8°C no século XX

O mês de maio de 2014 foi o mais quente no mundo desde que começaram a subir as temperaturas em 1880, anunciou nesta segunda-feira a Agência Americana Oceânica e Atmosférica (NOAA).

A temperatura média na superfície terrestre e dos oceanos atingiu 15,54 graus Celsius em maio, isto é, 0,74°C a mais que a média de 14,8°C no século XX.

Também foi o 39º mês de maio consecutivo e o 351º mês seguido em que a temperatura global do planeta esteve acima da média do século XX, explicou a NOAA.

A última vez em que a temperatura de um mês de maio foi inferior à média do século XX remontava a 1976. O último mês em que a temperatura esteve abaixo da média no século passado foi em fevereiro de 1985.

A maior parte do planeta viveu em maio deste ano temperaturas mais quentes do que a média com picos de calor no leste do Cazaquistão, partes da Indonésia e o noroeste da Austrália, entre outros.

No entanto, partes do nordeste do Atlântico e locais limitados no noroeste e sudoeste do Pacífico, assim como nas águas oceânicas do sul da América, foram mais frias do que a média.

A temperatura de abril de 2014 esteve a par com a de 2010, que tinha sido a mais quente registrada no planeta aquele mês desde 1880, segundo a NOAA.

Segundo prognósticos da NOAA, há 70% de probabilidades de que a corrente quente do Pacífico El Niño volte a aparecer este verão no hemisfério norte e 80% de possibilidades de que surja durante o outono e inverno próximos, o que poderia ter um impacto importante nas temperaturas e nas precipitações em todo o mundo.

(AFP, via portal Terra)
http://noticias.terra.com.br/ciencia/clima/maio-de-2014-foi-o-mais-quente-do-mundo-desde-1880,4a14fb2e8d9c6410VgnCLD200000b1bf46d0RCRD.html