Arquivo da tag: Economia

Roteiro para acordo global sobre o clima (Correio Braziliense)

JC e-mail 4393, de 28 de Novembro de 2011.

Por Connie Hedegaard

Quando ministros e negociadores de todo o mundo se reunirem, a partir de hoje, em Durban (África do Sul) para a Conferência da ONU sobre o Clima, será um momento decisivo para avançarmos no combate internacional contra as alterações climáticas.

Alguns perguntarão: não poderíamos aguardar um pouco e tratar do problema do clima depois de termos resolvido a crise da dívida na Europa, quando houver uma nova retomada do crescimento? A resposta é não. As inundações na Tailândia e as secas no Texas e no Chifre da África são apenas alguns dos mais recentes alertas de que o problema do clima não perdeu o caráter de urgência, porque as alterações climáticas estão se agravando. O recente relatório World Energy Outlook, da Agência Internacional da Energia (AIE), foi mais um sinal de alarme: o tempo está se esgotando e a fatura vai multiplicar-se assustadoramente se não agirmos já.

Portanto, o que podemos conseguir em Durban? Os comentários da comunicação social nos deixam a impressão de que só há uma forma de aferir o êxito: levar os países desenvolvidos a subscreverem um segundo período de compromisso do Protocolo de Kyoto, após o termo do primeiro, em 2012.

Sejamos claros: a UE apoia o Protocolo de Kyoto. Baseamos a nossa legislação nos seus princípios; somos a região do mundo com o objetivo mais ambicioso no âmbito de Kyoto – e estamos a cumpri-lo. Na verdade, estamos a caminho de ultrapassar o nosso objetivo.

Mas o Protocolo de Kyoto baseia-se numa distinção nítida entre países desenvolvidos e países em desenvolvimento e exige medidas apenas aos primeiros. Não lhes parece que a evolução da economia mundial ao longo das últimas duas décadas tem atenuado cada vez mais essa distinção?

Consideremos Cingapura e Coreia do Sul. São fortes economias de exportação, com indústrias competitivas e classificações impressionantes no Índice de Desenvolvimento Humano publicado pelo Programa das Nações Unidas para o Desenvolvimento. Contudo, no Protocolo de Quioto, figuram como países em desenvolvimento. Ou consideremos uma economia emergente dinâmica como o Brasil. Tem indústrias florescentes, recursos naturais imensos e um rendimento per capita visivelmente superior aos da Bulgária ou da Romênia, por exemplo.

Os padrões de poluição estão igualmente colocando em causa a distinção entre países desenvolvidos e países em desenvolvimento. Segundo a AIE, o atual aumento da poluição pelo CO2 é causado principalmente por economias emergentes dependentes do carvão. E essa tendência só irá acentuar-se. Até 2035, 90% do aumento da procura de energia caberão a países não pertencentes à OCDE. No caso da China, por exemplo, as suas emissões relacionadas com a energia triplicaram desde 1990, o que a torna o maior emissor mundial. Em média, um cidadão chinês emite hoje mais do que, por exemplo, um português, um sueco ou um húngaro. Por conseguinte, o mundo simplesmente não pode combater com eficácia as alterações climáticas sem o envolvimento da China e de outras economias emergentes.

Outro problema é que os Estados Unidos não subscreveram Kyoto – nem jamais subscreverão -, além de que o Japão, a Rússia e o Canadá disseram claramente que não tencionam aderir a um segundo período de compromisso. Significa isso, em suma, que, se a União Europeia subscrevesse um segundo período relativo a Kyoto, juntamente com algumas outras economias desenvolvidas, poderia cobrir, no máximo, 16% das emissões mundiais, quando o primeiro período de Kyoto cobria cerca de um terço. Como se pode chamar a isso uma vitória para o clima? Por outras palavras, esse critério não tem hipótese de manter o aumento da temperatura abaixo de 2°C (3,6°F), que a comunidade internacional reconheceu dever ser o nosso objetivo comum.

Para termos hipótese de alcançar aquele objetivo, o que realmente necessitamos é de um quadro de ação mundial por parte de todas as grandes economias, tanto no mundo desenvolvido quanto no mundo em desenvolvimento. Um quadro de ação que verdadeiramente reflita o mundo do século 21, no qual todos os compromissos tenham o mesmo peso jurídico. A União Europeia está aberta a um segundo período de Kyoto, sob condição de que a integridade ambiental de Kyoto seja melhorada e Durban aprove um roteiro e um calendário claros para a conclusão desse quadro nos anos mais próximos e a sua aplicação, ao mais tardar, em 2020.

É minha esperança que todos os países demonstrem a vontade e a liderança política necessárias para se iniciar um tal processo em Durban. Em Copenhague, os dirigentes juraram manter-se abaixo dos 2°C. Soou a hora de provarem que não falavam em vão.

Connie Hedegaard é comissária europeia responsável pela Ação Climática.

Conferência sobre aquecimento começa sem clima na África do Sul (Folha de São Paulo)

C e-mail 4393, de 28 de Novembro de 2011.

COP-17, que reúne 190 países até o dia 10, não tem o objetivo de conseguir um novo acordo.

Já virou clichê dizer que as conferências do clima nunca alcançam o objetivo desejado. A COP-17 (17ª Conferência das Partes da Convenção do Clima das Nações Unidas), que começa hoje sob o signo da crise econômica, deve romper esse padrão: nela, o próprio objetivo foi diluído. Os diplomatas de 190 países que se reúnem de hoje ao próximo dia 10 em Durban, na África do Sul, não perseguem mais um acordo global contra emissões de gases-estufa. O que está em jogo é a continuidade ou não do acordo que existe hoje, o pífio Protocolo de Kyoto.

Para a diplomacia brasileira, a reunião terá sido um sucesso se as nações desenvolvidas concordarem em prolongar a vida do protocolo até 2020. E um fracasso em Durban traria um ônus extra para o Brasil, que sediará a próxima conferência ambiental da ONU, a Rio +20.

Kyoto, assinado em 1997, previa que os países industrializados cortassem suas emissões em 5,2% em relação a 1990 até 2012. Como se sabe, os EUA ficaram de fora, e o acordo teve impacto virtualmente nulo sobre a concentração global de gases-estufa na atmosfera, que cresceu 7% de 1997 a 2011.

Não há acordo sobre o tipo de regime que possa ampliar o combate às emissões de carbono depois que ele expirar. “Se deixarmos morrer Kyoto, o consenso é que não se vai mais conseguir um acordo desse tipo”, disse o embaixador André Corrêa do Lago, negociador-chefe do Brasil na área de clima.

Ainda mais inútil – O problema é que também há consenso de que um eventual segundo período de compromisso de Kyoto será ainda mais inútil do que o primeiro para o objetivo-mor da convenção: evitar que o planeta aqueça mais de 2°C. Os EUA, principal emissor histórico, não ratificarão Kyoto nunca. Os países emergentes, hoje os maiores emissores do planeta, não têm metas obrigatórias pelo acordo.

E outros países industrializados com obrigações no acordo, como Japão e Rússia, já anunciaram que não participarão de um segundo período: apenas dizem que vão implementar as metas voluntárias de corte de emissões com que se comprometeram na conferência de Copenhague, em 2009.

Corrêa do Lago admite que esse cenário deixa dentro de Kyoto apenas a União Europeia e outros países menores, que somam somente 15% das emissões mundiais. Sem Kyoto, porém, os países em desenvolvimento temem que se perca a diferenciação que obriga os países ricos (que poluíram mais no passado) a fazer mais.

Os países desenvolvidos, por sua vez, apelam para um acordo único. Na semana passada, o ministro do Ambiente britânico, Chris Huhne, defendeu que um tratado legalmente vinculante que envolvesse também os emergentes fosse fechado em 2015. O Brasil – que se obrigou, por lei, a cortar emissões até 2020 – não fecha a porta a um acordo desses. Mas antes os ricos terão de entregar Kyoto.

Outro impasse deve girar em torno do dinheiro que os países ricos prometeram desembolsar para o combate à mudança climática nos pobres: US$ 30 bilhões entre 2010 e 2012 e um Fundo Verde de US$ 100 bilhões por ano a partir de 2020. Com a crise da dívida dos EUA e o colapso financeiro da Europa, os principais doadores, falar em dinheiro para o clima é a proverbial corda em casa de enforcado.

A crise tem feito os países ricos levantarem dúvidas sobre que tipo de verba constitui o Fundo Verde. O discurso dos ricos agora, dizem diplomatas brasileiros, é que o dinheiro do fundo verde deve ser sobretudo privado. “Não foram setores privados que se comprometeram com o dinheiro, portanto eles não poderão ser cobrados”, afirmou o diplomata brasileiro André Odembreit.

É tarde para conter aquecimento, diz análise – Enquanto os diplomatas tentam tirar as negociações internacionais sobre o clima da irrelevância, cientistas alertam que é provavelmente tarde demais para evitar a mudança climática perigosa.

Um relatório divulgado na semana passada pelo Pnuma (Programa das Nações Unidas para o Meio Ambiente) sugere que o planeta terá em 2020, na melhor das hipóteses, 6 bilhões de toneladas de CO₂ “sobrando” no ar em relação ao que precisaria para cumprir a meta de evitar um aquecimento global maior do que 2°C neste século. Para ter mais de 66% de chance de cumprir a meta, seria preciso limitar as emissões de gases-estufa a 44 bilhões de toneladas de CO₂ em 2020.

Hoje elas são de 50 bilhões de toneladas, e permanecerão nessa faixa somente se todos os países cumprirem estritamente as metas mais ambiciosas com as quais disseram que poderiam se comprometer no Acordo de Copenhague, em 2009 -a UE, por exemplo, disse que cortaria 30% de suas emissões em vez dos 20% que prometeu, mas só se outros países aumentassem sua ambição.

Caso pouco seja feito – o que parece o cenário mais provável considerando o contexto político atual -, as emissões atingirão 55 bilhões de toneladas, e o “buraco” para cumprir a meta será de 9 bilhões em vez de 6 bilhões de toneladas de CO2 em 2020. Mesmo a trajetória mais benigna de emissões põe o planeta no rumo de esquentar de 2,5°C a 5°C até 2100.

O relatório do Pnuma, intitulado “Bridging the Gap” (algo como “Tapando o Buraco”), tenta passar uma mensagem positiva: ele afirma que é “tecnicamente possível e economicamente viável” fechar o buraco de 6 bilhões de toneladas até 2020 cortando emissões em vários setores.

A probabilidade de que isso aconteça, porém, é tão pequena que nem os cientistas que elaboraram o documento acreditam nela. “Até a véspera da divulgação do estudo, nós ainda estávamos divididos sobre se deveríamos passar uma mensagem esperançosa ou pessimista”, disse à Folha Suzana Kahn Ribeiro, professora da Coppe-UFRJ e uma das coordenadoras do trabalho.

Na divulgação, porém, prevaleceu a necessidade política do Pnuma de adotar a estratégia da esperança, para estimular os negociadores em Durban a tentar um resultado mais ambicioso.

Exterminate a species or two, save the planet (RT)

Published: 26 January, 2011, 14:43

Edited: 15 April, 2011, 05:18

 Biologists have suggested a mathematical model, which will hopefully predict which species need to be eliminated from an unstable ecosystem, and in which order, to help it recover.

The counterintuitive idea to kill living things for the sake of biodiversity conservation comes from the complex connections presented in ecosystems. Eliminate a predator, and its prey thrives and shrinks the amount of whatever it has for its own food. Such “cascading” impacts along the “food webs” can be unpredictable and sometimes catastrophic.

Sagar Sahasrabudhe and Adilson Motter of Northwestern University in the US have shown that in some food web models, the timely removal or suppression of one or several species can do quite the opposite and mitigate the damage caused by local extinction. The paper is described in Nature magazine.

The trick is not an easy one, since the timing of removal is just as important as the targeted species. A live example Sahasrabudhe and Motter use is that of island foxes on the Channel Islands off the coast of California. When feral pigs were introduced in the ecosystem, they attracted golden eagles, which preyed on foxes as well. Simply reversing the situation by removing the pigs would make the birds switch solely to foxes, which would eventually make them extinct. Instead, conservation activists captured and relocated the eagles before eradicating the pigs, saving the fox population.

Of course conservation scientists are not going to start taking decisions based on the models straight away. Real ecosystems are not limited to predator and prey relationships, and things like parasitism, pollination and nutrient dynamics have to be taken into account as well. On the other hand, ecosystems were thought to be too complex to be modeled at all some eight years ago, Martinez says. Their work gives more confidence that it will have practical uses in nearest future.

The human cause of climate change: Where does the burden of proof lie? (Wiley)

Dr. Kevin Trenberth advocates reversing the ‘null hypothesis’

Public release date: 3-Nov-2011
Contact: Ben Norman
44-124-377-0375
Wiley-Blackwell

The debate may largely be drawn along political lines, but the human role in climate change remains one of the most controversial questions in 21st century science. Writing in WIREs Climate Change Dr Kevin Trenberth, from the National Center for Atmospheric Research, argues that the evidence for anthropogenic climate change is now so clear that the burden of proof should lie with research which seeks to disprove the human role.

In response to Trenberth’s argument a second review, by Dr Judith Curry, focuses on the concept of a ‘null hypothesis’ the default position which is taken when research is carried out. Currently the null hypothesis for climate change attribution research is that humans have no influence.

“Humans are changing our climate. There is no doubt whatsoever,” said Trenberth. “Questions remain as to the extent of our collective contribution, but it is clear that the effects are not small and have emerged from the noise of natural variability. So why does the science community continue to do attribution studies and assume that humans have no influence as a null hypothesis?”

To show precedent for his position Trenberth cites the 2007 report by the Intergovernmental Panel on Climate Change which states that global warming is “unequivocal”, and is “very likely” due to human activities.

Trenberth also focused on climate attribution studies which claim the lack of a human component, and suggested that the assumptions distort results in the direction of finding no human influence, resulting in misleading statements about the causes of climate change that can serve to grossly underestimate the role of humans in climate events.

“Scientists must challenge misconceptions in the difference between weather and climate while attribution studies must include a human component,” concluded Trenberth. “The question should no longer be is there a human component, but what is it?”

In a second paper Dr Judith Curry, from the Georgia Institute of Technology, questions this position, but argues that the discussion on the null hypothesis serves to highlight fuzziness surrounding the many hypotheses related to dangerous climate change.

“Regarding attribution studies, rather than trying to reject either hypothesis regardless of which is the null, there should be a debate over the significance of anthropogenic warming relative to forced and unforced natural climate variability,” said Curry.

Curry also suggested that the desire to reverse the null hypothesis may have the goal of seeking to marginalise the climate sceptic movement, a vocal group who have challenged the scientific orthodoxy on climate change.

“The proponents of reversing the null hypothesis should be careful of what they wish for,” concluded Curry. “One consequence may be that the scientific focus, and therefore funding, would also reverse to attempting to disprove dangerous anthropogenic climate change, which has been a position of many sceptics.”

“I doubt Trenberth’s suggestion will find much support in the scientific community,” said Professor Myles Allen from Oxford University, “but Curry’s counter proposal to abandon hypothesis tests is worse. We still have plenty of interesting hypotheses to test: did human influence on climate increase the risk of this event at all? Did it increase it by more than a factor of two?”

###

All three papers are free online:

Trenberth. K, “Attribution of climate variations and trends to human influences and natural variability”: http://doi.wiley.com/10.1002/wcc.142

Curry. J, “Nullifying the climate null hypothesis”: http://doi.wiley.com/10.1002/wcc.141

Allen. M, “In defense of the traditional null hypothesis: remarks on the Trenberth and Curry opinion articles”: http://doi.wiley.com/10.1002/wcc.145

Mixed messages on climate ‘vulnerability’ (BBC)

13 November 2011 Last updated at 14:45 GMT

Cyclist in floodThere are concerns that climate change may exacerbate flooding in cities such as Bangkok

One of the most striking new voices on climate change that’s emerged since the UN summit in Copenhagen two years ago is the Climate Vulnerable Forum.

The grouping includes small island states vulnerable to extreme weather events and sea level rise, those with immense spans of low-lying coastline such as Vietnam and Bangladesh, and dry nations of East Africa.

It’s currently holding a meeting in Bangladesh, with UN Secretary-General Ban Ki-moon as the keynote speaker.

These countries feel vulnerable as a result of several types of projected climate impact.

In increasing order of suddenness, there are what you might call “steady-state” impacts such as rising sea levels; increased separation of weather into more concentrated wet periods and dry periods; and a greater occurrence of extreme weather events such as hurricanes, floods, heatwaves and droughts.

But what can science really tell us about these extremes?

While the vulnerable meet in Dhaka, the Intergovernmental Panel on Climate Change (IPCC) will be sitting down in Kampala to answer the question.

For almost a week, government delegates will pore over the summary of the IPCC’s latest report on extreme weather, with the lead scientific authors there as well. They’re scheduled to emerge on Friday with an agreed document.

The draft, which has found its way into my possession, contains a lot more unknowns than knowns.

On the one hand, it says it is “very likely” that the incidence of cold days and nights has gone down and the incidence of warm days and nights has risen globally.

And the human and financial toll of extreme weather events has risen.

Human hand fingered?

But when you get down to specifics, the academic consensus is far less certain.

Glacier, AlaskaEnhanced glacier melt could speed up sea level rise in the coming decades

There is “low confidence” that tropical cyclones have become more frequent, “limited-to-medium evidence available” to assess whether climatic factors have changed the frequency of floods, and “low confidence” on a global scale even on whether the frequency has risen or fallen.

In terms of attribution of trends to rising greenhouse gas concentrations, the uncertainties continue.

While it is “likely” that anthropogenic influences are behind the changes in cold days and warm days, there is only “medium confidence” that they are behind changes in extreme rainfall events, and “low confidence” in attributing any changes in tropical cyclone activity to greenhouse gas emissions or anything else humanity has done.

(These terms have specific meanings in IPCC-speak, with “very likely” meaning 90-100% and “likely” 66-100%, for example.)

And for the future, the draft gives even less succour to those seeking here a new mandate for urgent action on greenhouse gas emissions, declaring: “Uncertainty in the sign of projected changes in climate extremes over the coming two to three decades is relatively large because climate change signals are expected to be relatively small compared to natural climate variability”.

It’s also explicit in laying out that the rise in impacts we’ve seen from extreme weather events cannot be laid at the door of greenhouse gas emissions: “Increasing exposure of people and economic assets is the major cause of the long-term changes in economic disaster losses (high confidence).

“Long-term trends in normalized economic disaster losses cannot be reliably attributed to natural or anthropogenic climate change.”

The succour only lasts for so long, however.

If the century progresses without restraints on greenhouse gas emissions, their impacts will come to dominate, it forecasts:

  • “It is very likely that the length, frequency and/or intensity of warm spells, including heat waves, will continue to increase over most land areas…
  • “It is likely that the frequency of heavy precipitation or the proportion of total rainfall from heavy falls will increase in the 21st Century over many areas of the globe…
  • “Mean tropical cyclone maximum wind speed is likely to increase…
  • “There is medium confidence that droughts will intensify in the 21st Century in some seasons and areas…
  • “Low-probability high-impact changes associated with the crossing of poorly understood thresholds cannot be excluded, given the transient and complex nature of the climate system.”

The draft report makes clear that lack of evidence or lack of confidence on a particular impact doesn’t mean it won’t occur; just that it’s hard to tell.

Climate a distraction?

It’s impossible to read the draft without coming away with the impression that with or without anthropogenic climate change, extreme weather impacts are going to be felt more and more, simply because there are more and more people on planet Earth – particularly in the swelling “megacities” of the developing world that overwhelmingly lie on the coast or on big rivers close to the coast.

President NasheedPresident Nasheed of the Maldives has warned that climate change may mean the end of his nation

The current Bangkok floods are a case in point.

As UK academic Mike Hulme and others have argued, such events will occur whether exacerbated by climate change or not; and vulnerable societies need protection irrespective of climate change.

He’s argued for a divorce, therefore, between the issues of adaptation, which he says could usefully be added into the overall process of overseas development assistance, and mitigation of emissions.

It’s not proved to be a popular notion with developing world governments, which remain determined to tie the two together in the UN climate process.

Governments of vulnerable countries argue that as developed nations caused the climate change problem, they must compensate those that suffer its impacts with money above and beyond aid.

Developing countries like the fact that under the UN climate process, the rich are committed to funding adaptation for the poor.

Yet as the brief prepared for the Dhaka meeting by the humanitarian charity Dara shows, it isn’t happening anywhere near as fast as it ought to be.

Only 8% of the “fast-start finance” pledged in Copenhagen, it says, has actually found its way to recipients.

It’s possible – no, it’s “very likely” – that the IPCC draft will be amended as the week progresses, and presumably the governments represented at the Climate Vulnerable Forum will be asking their delegates to inject a greater sense of urgency.

Although there are sobering messages, they’re not for everyone.

The warning that “some local areas will become increasingly marginal as places to live or in which to maintain livelihoods” under increased climate impacts, and that “for locations such as atolls, in some cases it is possible that many residents will have to relocate” are, in their understated way, quite chilling.

But very few of the world’s seven billion live on atolls; so will this be enough to provide a wake-up call to other countries?

It’s also possible to argue that extreme weather isn’t really the issue for the small island developing states, or for those with long flat coastlines.

The big issue (which the IPCC is much more confident about) is sea level rise – slow, progressive, predictable; capable of being dealt with in some cases (think the Netherlands) provided the will and money are there.

But capable of wiping a country off the map if those two factors are absent.

This is one of the reasons why the Climate Vulnerable Forum established itself.

They felt that although both developed and developing nations understood vulnerability in theory, they didn’t get the message viscerally.

Whether they will by the end of the week when the IPCC releases the final version, I’m not so sure.

Anthropologists Consider a New Code of Ethics (The Chronicle of Higher Education)

November 20, 2011

By Dan Berrett

Today’s anthropologists are apt to work far away from the unspoiled villages that brought fame to the discipline’s early practitioners.

Instead, they might be in a hospital room observing patients, at a construction site gauging its archaeological significance, or in a corporate office examining organizational behavior, among other scenarios.

Those diverse contexts may explain why it has proved to be no easy job for anthropologists to create a new set of ethical guidelines. After three years spent seeking opinion and working on new guidelines, the American Anthropological Association is moving toward changes that some in the discipline fear will water down anthropologists’ obligations to the people they study.

“Dealing with ethics codes is complicated,” said David H. Price, a member of the committee charged with revising the guidelines. The word was echoed last week by fellow committee members at a panel on ethics at the association’s annual meeting here. Basic ethical principles might seem clear at the outset, but then point to different courses of action depending on the context, said Mr. Price, a professor at Saint Martin’s University, in Washington. “You can start with something simple, like ‘Do no harm,'” he said, and then find yourself hamstrung if those guidelines are written too specifically ­— or lost at sea if they are too vague.

One of the most notable changes in the proposed new code was to remove what many anthropologists call the “prime directive.”

The previous code, which dates to 1998 (though incremental changes have been made since then), told anthropologists that they “have primary ethical obligations to the people, species, and materials they study and to the people with whom they work.”

By many accounts, that directive has meant that an anthropologist’s obligation to his or her research subject can eclipse the goal of acquiring new knowledge. In other words, if research goes against the interests of subjects, then that research ought to be stopped.

The newer version, which the association’s executive board accepted for review at this year’s meeting but did not formally adopt, is more nuanced. It explains that the primary ethical obligation is “to avoid doing harm to the lives, communities, or environments” that anthropologists study.

The shift struck some as important. At other sessions during the annual meeting, several speakers and audience members said they held themselves to a different standard. It was not enough to keep from hurting their subjects. They should advocate for them.

The new code may do little to change that sense of obligation. It persists, in part, because of the assumption that an anthropologist is still that lone researcher closely observing a vulnerable tribe in a remote area, some on the committee said.

“That pure anthropology maybe never existed,” said Dena K. Plemmons, chair of the committee and a research ethicist at the University of California at San Diego. “Our subjects are tremendously diverse and we have diverse responsibilities.”

For example, Simon J. Craddock Lee, an assistant professor of medical anthropology at the University of Texas Southwestern Medical Center at Dallas, said his subjects are “well-paid cancer surgeons who give care to disenfranchised people.”

He has obligations to both groups, he said. “If my subjects are doctors, how do I balance my obligations to the people who are truly vulnerable?”

One audience member suggested that his chief loyalty should be to the person or group who is most at risk of harm among those being studied.

While that might seem straightforward, Mr. Lee replied, everyone—including the poor and vulnerable—has an agenda.

“We can’t assume there’s a David-and-Goliath relationship,” he said. “It’s not clean enough to say you can sort the good sheep from the goats.”

Ethics, or Politics?

The question of clandestine research offered another case in which a seemingly simple principle can become complicated when applied to field work. To some, discouraging clandestine research meant that an anthropologist should never deceive subjects and should always share his or her work publicly.

But Laura A. McNamara, an anthropologist who works for the U.S. Department of Energy’s Sandia National Laboratories, disagreed, saying that some anthropologists study classified information; they cannot make their findings public.

Even deceit can have its place, she added. Nancy Scheper-Hughes, a professor of medical anthropology at the University of California at Berkeley, for example, did research that exposed the organ-trafficking trade. Her work never would have been made public if she had believed that her primary obligation was to her subjects, who were, after all, organ traffickers.

The real problem, Ms. McNamara and her fellow committee members agreed, is not when research is clandestine, but when it is “compartmentalized,” which means a researcher may not know who is using or financing the research, or what the implications will be.

“There is no way you can communicate an informed perspective,” she said.

How anthropologists wield ethical guidelines also came up for scrutiny. Anthropologists push most fervently to revise their ethics when they disagree with the politics underlying controversial research, several speakers noted.

“We go to high Sturm und Drang” about ethics, Ms. McNamara said, when political objections arise about who is doing anthropological research for whom—especially when it’s for the government, corporations, or the rich and powerful. “Ethics becomes conflated with politics in ways that I find profoundly distressing,” she said.

Some anthropologists pushed to revise the ethics code in 2007, said Ms. Plemmons, when acontroversy erupted over the Human Terrain System, a program that embedded anthropologists with United States military units. The association’s executive board disapproved of anthropologists’ involvement in the act of making war, calling it “an unacceptable application of anthropological expertise” which should, instead, serve “the humane causes of global peace and social justice.”

Education and Punishment

Committee members said they also heard from anthropologists who wanted an ethics code that could be enforced. That way, anthropologists who act badly could be punished or cast out of the discipline.

The association once held the power to adjudicate claims of ethical breaches, Mr. Price said. But when he reviewed records of the association’s work from that period, he saw that most claims involved what he called “sleaziness,” or cases in which professors harassed students or took credit for their research. While unethical, those breaches were not specific to anthropology and needed no separate code beyond those that already exist, he said.

Assuming responsibility for adjudicating ethical disputes presented another set of problems, said several speakers. It would mean a new mission and structure for the association, which would have to hire investigators to police wrongdoing and claim the power to credential who gets to call him- or herself an anthropologist. Many times, such complaints can be handled through an institutional review board or a university.

The association has seen first-hand how difficult such investigations can be. In 2001 and 2002, it probed claims of wrongdoing and ethical malpractice against anthropologists and geneticists in the Amazon in the 1960s. The association later published a report finding fault with some of the scholars’ conduct in what became known as the Darkness in El Dorado controversy (after a journalist’s account by that name), only to rescind its own report in 2005.

Besides, the ethics committee surveyed members and learned that most anthropologists are not all that interested in using ethical guidelines as a means to punish each other. What most anthropologists wanted, they said, was some form of general guidance, an educational tool to train future anthropologists.

Arjun Appadurai: A Nation of Business Junkies (Anthropology News)

Guest Columnist
Arjun Appadurai

By Anthropology News on November 3, 2011

I first came to this country in 1967. I have been either a crypto-anthropologist or professional anthropologist for most of that time. Still, because I came here with an interest in India and took the path of least resistance in choosing to maintain India as my principal ethnographic referent, I have always been reluctant to offer opinions about life in these United States. I have begun to do so recently, but mainly in occasional blogs, twitter posts and the like. Now seems to be a good time to ponder whether I have anything to offer to public debate about the media in this country. Since I have been teaching for a few years in a distinguished department of media studies, I feel emboldened to offer my thoughts in this new AN Forum.

My examination of changes in the media over the last few decades is not based on a scientific study. I read the New York Times every day, the Wall Street Journal occasionally, and I subscribe to The Atlantic, Harper’s, The New York Review of Books, the Economist, and a variety of academic journals in anthropology and area studies. I get a smattering of other useful media pieces from friends on Facebook and other social media sites. I also use the Internet to keep up with as much as I can from the press in and about India. At various times in the past, I have subscribed to The Nation, Money Magazine, Foreign Policy, the Times Literary supplement and a few other periodicals.

I have long been interested in how culture and economy interact. Today, I want to make an observation about the single biggest change I have seen over my four decades in the United States, which is a growing and now hegemonic domination of the news and of a great deal of opinion, both in print and on television, by business news. Business news was a specialized affair in the late 1960’s, confined to a few magazines such as Money and Fortune, and to newspapers and TV reporters (not channels). Now, it is hard to find anything but business as the topic of news in all media. Consider television: if you spend even three hours surfing between CNN and BBC on any given day ( surfing for news about Libya or about soccer, for example) you will find yourself regularly assaulted by business news, not just from London, New York and Washington, but from Singapore, Hong Kong, Mumbai and many other places. Look at the serious talk shows and chances are that you will find a talking CEO, describing what’s good about his company, what’s bad about the government and how to read his company’s stock prices. Channels like MSNBC are a form of endless, mind-numbing Jerry Lewis telethon about the economy, with more than a hint of the desperation of the Depression era movie “They Shoot Horses Don’t They?”, as they bid the viewer to make insane bets and to mourn the fallen heroes of failed companies and fired CEO’s.

Turn to the newspapers and things get worse. Any reader of the New York Times will find it hard to get away from the business machine. Start with the lead section, and stories about Obama’s economic plans, mad Republican proposals about taxes, the Euro-crisis and the latest bank scandal will assault you. Some relief is provided by more corporate news: the exit of Steve Jobs, the Op-Ed piece about the responsibilities of the super-rich by Warren Buffet, Donald Trump advertising his new line of housewares to go along with his ugly homes and buildings. Turn to the sports section: it is littered with talk of franchises, salaries, trades, owner antics, stadium projects and more. I need hardly say anything about the section on “Business” itself, which has now virtually become redundant. And if you are still thirsty for more business news, check out the “Home”, “Lifestyle” and Real Estate sections for news on houses you can’t afford and mortgage financing gimmicks you have never heard off. Some measure of relief is to be in the occasional “Science Times” and in the NYT Book Review, which do have some pieces which are not primarily about profit, corporate politics or the recession.

The New York Times is not to blame for this. They are the newspaper of “record’ and that means that they reflect broader trends and cannot be blamed for their compliance with bigger trends. Go through the magazines when you take a flight to Detroit or Mumbai and there is again a feast of news geared to the “business traveler”. This is when I catch up on how to negotiate the best deal, why this is the time to buy gold and what software and hardware to use when I make my next presentation to General Electric. These examples could be multiplied in any number of bookstores, newspaper kiosks, airport lounges, park benches and dentist’s offices.

What does all this reflect? Well, we were always told that the business of America is business. But now we are gradually moving into a society in which the business of American life is also business. Who are we now? We have become (in our fantasies) entrepreneurs, start-up heroes, small investors, consumers, home-owners, day-traders, and a gallery of supporting business types, and no longer fathers, mothers, friends or neighbors. Our very citizenship is now defined by business, whether we are winners or losers. Everyone is an expert on pensions, stocks, retirement packages, vacation deals, credit- card scams and more. Meanwhile, as Paul Krugman has argued in a brilliant recent speech to some of his fellow economists, this discipline, especially macro-economics, has lost all its capacities to analyze, define or repair the huge mess we are in.

The gradual transformation of the imagined reader or viewer into a business junkie is a relatively new disease of advanced capitalism in the United States. The avalanche of business knowledge and information dropping on the American middle-classes ought to have helped us predict – or avoid – the recent economic meltdown, based on crazy credit devices, vulgar scams and lousy regulation. Instead it has made us business junkies, ready to be led like sheep to our own slaughter by Wall Street, the big banks and corrupt politicians. The growing hegemony of business news and knowledge in the popular media over the last few decades has produced a collective silence of the lambs. It is time for a bleat or two.

Dr. Arjun Appadurai is a prominent contemporary social-cultural anthropologist, having formerly served as Provost and Senior Vice President for Academic Affairs at The New School in NYC. He has held various professorial chairs and visiting appointments at some of top institutions in the United States and Europe. In addition, he has served on several scholarly and advisory bodies in the United States, Latin America, Europe and India. Dr. Appadurai is a prolific writer having authored numerous books and scholarly articles. The nature and significance of his contributions throughout his academic career have earned him the reputation as a leading figure in his field. He is the author of The Future as a Cultural Fact: Essays on the Global Condition (Verso: forthcoming 2012).

Ken Routon is the contributing editor of Media Notes. He is a visiting professor of cultural anthropology at the University of New Orleans and the author of Hidden Powers of the State in the Cuban Imagination (University Press of Florida, 2010).

Where Did Global Warming Go? (N.Y. Times)

By ELISABETH ROSENTHAL
Published: October 15, 2011

Mark Pernice and Scott Altmann

IN 2008, both the Democratic and Republican candidates for president, Barack Obama and John McCain, warned about man-made global warming and supported legislation to curb emissions. After he was elected, President Obama promised “a new chapter in America’s leadership on climate change,” and arrived cavalry-like at the 2009 United Nations Climate Conference in Copenhagen to broker a global pact.

But two years later, now that nearly every other nation accepts climate change as a pressing problem, America has turned agnostic on the issue.

In the crowded Republican presidential field, most seem to agree with Gov. Rick Perry of Texas that “the science is not settled” on man-made global warming, as he said in a debate last month. Alone among Republicans onstage that night, Jon M. Huntsman Jr. said that he trusted scientists’ view that the problem was real. At the moment, he has the backing of about 2 percent of likely Republican voters.

Though the evidence of climate change has, if anything, solidified, Mr. Obama now talks about “green jobs” mostly as a strategy for improving the economy, not the planet. He did not mention climate in his last State of the Union address. Meanwhile, the administration is fighting to exempt United States airlines from Europe’s new plan to charge them for CO2 emissions when they land on the continent. It also seems poised to approve a nearly 2,000-mile-long pipeline, from Canada down through the United States, that will carry a kind of oil. Extracting it will put relatively high levels of emissions into the atmosphere.

“In Washington, ‘climate change’ has become a lightning rod, it’s a four-letter word,” said Andrew J. Hoffman, director of the University of Michigan’s Erb Institute for Sustainable Development.

Across the nation, too, belief in man-made global warming, and passion about doing something to arrest climate change, is not what it was five years or so ago, when Al Gore’s movie had buzz and Elizabeth Kolbert’s book about climate change, “Field Notes From a Catastrophe,” was a best seller. The number of Americans who believe the earth is warming dropped to 59 percent last year from 79 percent in 2006, according to polling by the Pew Research Group. When the British polling firm Ipsos Mori asked Americans this past summer to list their three most pressing environmental worries, “global warming/climate change” garnered only 27 percent, behind even “overpopulation.”

This fading of global warming from the political agenda is a mostly American phenomenon. True, public enthusiasm for legislation to tackle climate change has flagged somewhat throughout the developed world since the recession of 2008. Nonetheless, in many other countries, legislation to control emissions has rolled out apace. Just last Wednesday, Australia’s House of Representatives passed a carbon tax, which is expected to easily clear the country’s Senate. Europe’s six-year-old carbon emissions trading system continues its yearly expansion. In 2010, India passed a carbon tax on coal. Even China’s newest five-year plan contains a limited pilot cap-and-trade system, under which polluters pay for excess pollution.

The United States is the “one significant outlier” on responding to climate change, according to a recent global research report produced by HSBC, the London-based bank. John Ashton, Britain’s special representative for climate change, said in an interview that “in the U.K., in Europe, in most places I travel to” — but not in the United States — “the starting point for conversation is that this is real, there are clear and present dangers, so let’s get a move on and respond.” After watching the Republican candidates express skepticism about global warming in early September, former President Bill Clinton put it more bluntly, “I mean, it makes us — we look like a joke, right?”

Americans — who produce twice the emissions per capita that Europeans do — are in many ways wired to be holdouts. We prefer bigger cars and bigger homes. We value personal freedom, are suspicious of scientists, and tend to distrust the kind of sweeping government intervention required to confront rising greenhouse gas emissions.

“Climate change presents numerous ideological challenges to our culture and our beliefs,” Professor Hoffman of the Erb Institute says. “People say, ‘Wait a second, this is really going to affect how we live!’ ”

There are, of course, other factors that hardened resistance: America’s powerful fossil-fuel industry, whose profits are bound to be affected by any greater control of carbon emissions; a cold American winter in 2010 that made global warming seem less imminent; and a deep recession that made taxes on energy harder to talk about, and job creation a more pressing issue than the environment — as can be seen in the debate over the pipeline from Canada.

But it is also true that Europe has endured a deep recession and has had mild winters. What’s more, some of the loudest climate deniers are English. Yet the European Union is largely on target to meet its goal of reducing emissions by at least 20 percent over 1990 levels by 2020.

Connie Hedegaard, the European Union’s commissioner on climate action, told me recently: “Look, it was not a piece of cake here either.”

In fact, many countries in Europe have come to see combating climate change and the move to a “greener” economy as about “opportunities rather than costs,” Mr. Ashton said. In Britain, the low-carbon manufacturing sector has been one of the few to grow through the economic slump.

“One thing I’ve been pleasantly surprised about in the E.U. is that despite the economic and financial crisis, the momentum on climate change has more or less continued,” Mr. Ashton said.

And Conservatives, rather than posing an obstacle, are directing aggressive climate policies in much of the world. Before becoming the European Union’s commissioner for climate action, Ms. Hedegaard was a well-known Conservative politician in her native Denmark. In Britain, where a 2008 law required deep cuts in emissions, a coalition Conservative government is now championing a Green Deal.

In the United States, the right wing of the Republican Party has managed to turn skepticism about man-made global warming into a requirement for electability, forming an unlikely triad with antiabortion and gun-rights beliefs. In findings from a Pew poll this spring, 75 percent of staunch conservatives, 63 percent of libertarians and 55 percent of Main Street Republicans said there was no solid evidence of global warming.

“This has become a partisan political issue here in a way it has not elsewhere,” said Andrew Kohut, president of the Pew Research Center. “We are seeing doubts in the U.S. largely because the issue has become a partisan one, with Democrats” — 75 percent of whom say they believe there is strong evidence of climate change — “seeing one thing and Republicans another.”

Europeans understand the challenges in the United States, though they sound increasingly impatient. “We are very much aware of the political situation in the United States and we don’t say ‘do this,’ when we know it can’t get through Congress,” said Ms. Hedegaard, when she was in New York for the United Nations General Assembly last month. But she added:

“O.K. if you can’t commit today, when can you? When are you willing to join in? Australia is making a cap-and-trade system. South Korea is introducing one. New Zealand and the E.U. have it already. So when is the time? That’s the question for the U.S.”

MEANWHILE, in the developing world, emerging economies like India and China are now pursuing aggressive climate policies. “Two years ago the assumption was that the developed world would have to lead, but now China, India and Brazil have jumped in with enthusiasm, and are moving ahead,” said Nick Robins of HSBC Global Research.

Buffeted by two years of treacherous weather that they are less able to handle than richer nations — from floods in India to water shortages in China — developing countries are feeling vulnerable. Scientists agree that extreme weather events will be more severe and frequent on a warming planet, and insurance companies have already documented an increase.

So perhaps it is no surprise that regard for climate change as “a very serious problem” has risen significantly in many developing nations over the past two years. A 2010 Pew survey showed that more than 70 percent of people in China, India and South Korea were willing to pay more for energy in order to address climate change. The number in the United States was 38 percent. China’s 12th five-year plan, for 2011-2015, directs intensive investment to low carbon industries. In contrast, in the United States, there is “no prospect of moving ahead” at a national legislative level, Mr. Robins said, although some state governments are addressing the issue.

In private, scientific advisers to Mr. Obama say he and his administration remain committed to confronting climate change and global warming. But Robert E. O’Connor, program director for decision, risk and management sciences at the National Science Foundation in Washington, said a bolder leader would emphasize real risks that, apparently, now feel distant to many Americans. “If it’s such an important issue, why isn’t he talking about it?”

Elisabeth Rosenthal is a reporter and blogger on environmental issues for The New York Times.

Copyright: A Conceptual Battle in a Digital Age (Science Daily)

ScienceDaily (Nov. 3, 2011) — What is it about copyright that doesn’t work in the digital society? Why do millions of people think it’s OK to break the law when it comes to file sharing in particular? Sociology of law researcher Stefan Larsson from Lund University believes that legal metaphors and old-fashioned mindsets contribute to the confusion and widening gaps between legislation and the prevailing norms.

Our language is made up of metaphors, even in our legal texts. Stefan Larsson has studied what consequences this has when digital phenomena, such as file sharing and downloading, are limited by descriptions intended for an analogue world. “When legal arguments equate file sharing with theft of physical objects, it sometimes becomes problematic,” says Stefan Larsson, who doesn’t think it is possible to equate an illegal download with theft of a physical object, as has been done in the case against The Pirate Bay.

Using the compensation model employed in the case against The Pirate Bay, the total value of such a site could be calculated at over SEK 600 billion. This is almost as much as Sweden’s national budget, says Stefan Larsson. The prosecutor in the Pirate Bay case chose to pursue a smaller number of downloads and the sum of the fines therefore never reached these proportions.

In Stefan Larsson’s view, the word ‘copies’ is a hidden legal metaphor that causes problematic ideas in the digital society. For example, copyright does not take into account that a download does not result in the owner losing his or her own copy. Neither is it possible to equate number of downloads with lost income for the copyright holder, since it is likely that people download a lot more than they would purchase in a shop.

Other metaphors that are used for downloading are infringement, theft and piracy. “The problem is that these metaphors make us equate copyright with ownership of physical property,” says Stefan Larsson.

Moreover, there are underlying mindsets which guide the whole of copyright, according to Stefan Larsson. One such mindset is the idea that creation is a process undertaken by sole geniuses and not so much in a cultural context. In Stefan Larsson’s view, this has the unfortunate consequence of making stronger copyright protection with longer duration and a higher degree of legal enforcement appear reasonable. The problem is that it is based on a misconception of how a lot of things are created, says Stefan Larsson: “Borrowing and drawing inspiration from other artists is essential to a lot of creative activity. This is the case both online and offline.”

Stefan Larsson has also studied the consequences when public perception of the law, or social norms, is not in line with what the law says. One consequence is that the State needs to exercise more control and issue more severe penalties in order to ensure that the law is followed. The European trend in copyright law is heading in this direction. Among other things, it is being made easier to track what individuals do on the Internet. This means that the integrity of the many is being eroded to benefit the interests of a few, according to Stefan Larsson: “When all’s said and done, it is about what we want the Internet to be. The fight for this is taking place, at least partially, through metaphorical expressions for underlying conceptions, but also through practical action on the role of anonymity online.”

Stefan Larsson’s thesis is entitled Metaphors and Norms – Understanding Copyright Law in a Digital Society.

Mathematically Detecting Stock Market Bubbles Before They Burst (Science Daily)

ScienceDaily (Oct. 31, 2011) — From the dotcom bust in the late nineties to the housing crash in the run-up to the 2008 crisis, financial bubbles have been a topic of major concern. Identifying bubbles is important in order to prevent collapses that can severely impact nations and economies.

A paper published this month in the SIAM Journal on Financial Mathematics addresses just this issue. Opening fittingly with a quote from New York Federal Reserve President William Dudley emphasizing the importance of developing tools to identify and address bubbles in real time, authors Robert Jarrow, Younes Kchia, and Philip Protter propose a mathematical model to detect financial bubbles.

A financial bubble occurs when prices for assets, such as stocks, rise far above their actual value. Such an economic cycle is usually characterized by rapid expansion followed by a contraction, or sharp decline in prices.

“It has been hard not to notice that financial bubbles play an important role in our economy, and speculation as to whether a given risky asset is undergoing bubble pricing has approached the level of an armchair sport. But bubbles can have real and often negative consequences,” explains Protter, who has spent many years studying and analyzing financial markets.

“The ability to tell when an asset is or is not in a bubble could have important ramifications in the regulation of the capital reserves of banks as well as for individual investors and retirement funds holding assets for the long term. For banks, if their capital reserve holdings include large investments with unrealistic values due to bubbles, a shock to the bank could occur when the bubbles burst, potentially causing a run on the bank, as infamously happened with Lehman Brothers, and is currently happening with Dexia, a major European bank,” he goes on to explain, citing the significance of such inflated prices.

Using sophisticated mathematical methods, Protter and his co-authors answer the question of whether the price increase of a particular asset represents a bubble in real time. “[In this paper] we show that by using tick data and some statistical techniques, one is able to tell with a large degree of certainty, whether or not a given financial asset (or group of assets) is undergoing bubble pricing,” says Protter.

This question is answered by estimating an asset’s price volatility, which is stochastic or randomly determined. The authors define an asset’s price process in terms of a standard stochastic differential equation, which is driven by Brownian motion. Brownian motion, based on a natural process involving the erratic, random movement of small particles suspended in gas or liquid, has been widely used in mathematical finance. The concept is specifically used to model instances where previous change in the value of a variable is unrelated to past changes.

The key characteristic in determining a bubble is the volatility of an asset’s price, which, in the case of bubbles is very high. The authors estimate the volatility by applying state of the art estimators to real-time tick price data for a given stock. They then obtain the best possible extension of this data for large values using a technique called Reproducing Kernel Hilbert Spaces (RKHS), which is a widely used method for statistical learning.

“First, one uses tick price data to estimate the volatility of the asset in question for various levels of the asset’s price,” Protter explains. “Then, a special technique (RKHS with an optimization addition) is employed to extrapolate this estimated volatility function to large values for the asset’s price, where this information is not (and cannot be) available from tick data. Using this extrapolation, one can check the rate of increase of the volatility function as the asset price gets arbitrarily large. Whether or not there is a bubble depends on how fast this increase occurs (its asymptotic rate of increase).”

If it does not increase fast enough, there is no bubble within the model’s framework.

The authors test their methodology by applying the model to several stocks from the dot-com bubble of the nineties. They find fairly successful rates in their predictions, with higher accuracies in cases where market volatilities can be modeled more efficiently. This helps establish the strengths and weaknesses of the method.

The authors have also used the model to test more recent price increases to detect bubbles. “We have found, for example, that the IPO [initial public offering] of LinkedIn underwent bubble pricing at its debut, and that the recent rise in gold prices was not a bubble, according to our models,” Protter says.

It is encouraging to see that mathematical analysis can play a role in the diagnosis and detection of bubbles, which have significantly impacted economic upheavals in the past few decades.

Robert Jarrow is a professor at the Johnson Graduate School of Management at Cornell University in Ithaca, NY, and managing director of the Kamakura Corporation. Younes Kchia is a graduate student at Ecole Polytechnique in Paris, and Philip Protter is a professor in the Statistics Department at Columbia University in New York.

Professor Protter’s work was supported in part by NSF grant DMS-0906995.

Governo apresenta oficialmente oito propostas para a Rio+20 (Jornal da Ciência)

JC e-mail 4376, de 01 de Novembro de 2011.

O governo apresenta nesta terça-feira (1º) a versão oficial do documento com oito propostas para a Conferência das Nações Unidas sobre o Desenvolvimento Sustentável, conhecida como Rio+20, a ser realizada no Rio de Janeiro de 28 de maio a 6 de junho de 2012. O documento foi apresentado hoje pela ministra do Meio Ambiente, Izabella Teixeira e pelo Itamaraty, em coletiva de imprensa, em Brasília.

A primeira proposta é a criação de um programa de proteção socioambiental global, cujo objetivo é assegurar garantia de renda para superar a pobreza extrema no mundo e promover ações estruturantes que garantam qualidade ambiental, segurança alimentar, moradia adequada e acesso à água limpa para todos.

A ideia desse programa, conforme consta do documento, é fazer com que “toda estrutura multilateral opere” para facilitar o acesso a tecnologias, recursos financeiros, infraestrutura e capacitação, a fim de que todas as pessoas tenham a quantidade e qualidade mínima de alimento, água e ambiente saudável.

Pela proposta brasileira, esse programa teria como foco uma estratégia de garantia de renda adequada às condições de cada país, diante de um momento de crise internacional em que se mobilizam vastos recursos globais para a recuperação do sistema financeiro. “O programa seria uma aposta no componente social, importante na solução brasileira para o enfrentamento da crise”, destaca o documento. “Essa é uma plataforma de diálogo global que poderia ser um passo crucial rumo ao desenvolvimento sustentável, com potencial para reforçar o papel virtuoso do multilateralismo”, complementa.

Na segunda proposta, o governo sugere a implementação de “objetivos de desenvolvimento sustentável”, adotando um programa de economia verde inclusiva, em lugar “de negociações complexas que busquem o estabelecimento de metas restritivas vinculantes”. Dentre outros, esses objetivos poderiam estar associados a erradicação da pobreza extrema; a segurança alimentar e nutricional; acesso a empregos adequados (socialmente justos e ambientalmente corretos); acesso a fontes adequadas de energia; a microempreendedorismo e microcrédito; a inovação para a sustentabilidade; acesso a fontes adequadas de recursos hídricos; e adequação da pegada ecológica à capacidade de regeneração do planeta.

Compras públicas sustentáveis – Na terceira proposta, o Brasil sugere um pacto global para produção e consumo sustentáveis. Ou seja, um conjunto de iniciativas para promover mudanças nos padrões de produção e consumo em diversos setores. Dessa forma, poderiam ser adotadas, com caráter prioritário, iniciativas que ofereçam suporte político a compras públicas sustentáveis, já que essas representam parte significativa da economia internacional, de cerca de 15% do Produto Interno Bruto (PIB) mundial; a classificações de consumo e eficiência energética; e financiamento de estudos e pesquisas para o desenvolvimento sustentável (com o objetivo de qualificar recursos humanos de alto nível e apoiar projetos científicos, tecnológicos e inovadores).

A quarta proposta sugere estabelecer repositório de iniciativas para dinamizar os mecanismos nacionais e de cooperação internacional, inclusive a utilização de recursos dos organismos multilaterais. Já a quinta sugestão propõe a criação de protocolo internacional para a sustentabilidade do setor financeiro.

Na sexta proposta o governo sugere novos indicadores para mensuração do desenvolvimento. Hoje os mais importantes são o Índice de Desenvolvimento Humano (IDH) e o Produto Interno Bruto (PIB) que, como medida de desenvolvimento sustentável, “são claramente limitadas”, por não integrarem a grande diversidade de aspectos sociais e ambientais aos valores econômicos, o que induz, segundo o documento, a percepções errôneas do grau de desenvolvimento e de progresso dos países.

Na sétima proposta o governo sugere a implementação de um “pacto pela economia verde inclusiva. A ideia é estimular a divulgação de relatórios e de índices de sustentabilidade por empresas estatais, bancos de fomento, patrocinadoras de entidades de previdência privada, empresas de capital aberto e empresas de grande porte. Ou seja, além dos aspectos econômico-financeiros, essas instituições incluam nas divulgações, obrigatoriamente, e de acordo com padrões internacionalmente aceitos e comparáveis, informações sobre suas atuações em termos sociais, ambientais e de governança corporativa.

Por sua vez, a oitava proposta é ligada a “estrutura institucional do desenvolvimento sustentável. Essa aborda vários tópicos, dentre os quais a adoção de mecanismo de coordenação institucional para o desenvolvimento sustentável”; reforma do Conselho Econômico e Social das Nações Unidas (ECOSOC), transformando-o em Conselho de Desenvolvimento Sustentável das Nações Unidas; aperfeiçoamento da governança ambiental internacional; o lançamento de processo negociador para uma convenção global sobre acesso à informação, participação pública na tomada de decisões e acesso à justiça em temas ambientais; e a governança da água.

(Viviane Monteiro – Jornal da Ciência)

The world at seven billion (BBC)

27 October 2011 Last updated at 23:08 GMT

File photograph of newborn babies in Lucknow, India, in July 2009

As the world population reaches seven billion people, the BBC’s Mike Gallagher asks whether efforts to control population have been, as some critics claim, a form of authoritarian control over the world’s poorest citizens.

The temperature is some 30C. The humidity stifling, the noise unbearable. In a yard between two enormous tea-drying sheds, a number of dark-skinned women patiently sit, each accompanied by an unwieldy looking cloth sack. They are clad in colourful saris, but look tired and shabby. This is hardly surprising – they have spent most of the day in nearby plantation fields, picking tea that will net them around two cents a kilo – barely enough to feed their large families.

Vivek Baid thinks he knows how to help them. He runs the Mission for Population Control, a project in eastern India which aims to bring down high birth rates by encouraging local women to get sterilised after their second child.

As the world reaches an estimated seven billion people, people like Vivek say efforts to bring down the world’s population must continue if life on Earth is to be sustainable, and if poverty and even mass starvation are to be avoided.

There is no doubting their good intentions. Vivek, for instance, has spent his own money on the project, and is passionate about creating a brighter future for India.

But critics allege that campaigners like Vivek – a successful and wealthy male businessman – have tended to live very different lives from those they seek to help, who are mainly poor women.

These critics argue that rich people have imposed population control on the poor for decades. And, they say, such coercive attempts to control the world’s population often backfired and were sometimes harmful.

Population scare

Most historians of modern population control trace its roots back to the Reverend Thomas Malthus, an English clergyman born in the 18th Century who believed that humans would always reproduce faster than Earth’s capacity to feed them.

Giving succour to the resulting desperate masses would only imperil everyone else, he said. So the brutal reality was that it was better to let them starve.

‘Plenty is changed into scarcity’

Thomas Malthus

From Thomas Malthus’ Essay on Population, 1803 edition:

A man who is born into a world already possessed – if he cannot get subsistence from his parents on whom he has a just demand, and if the society do not want his labour, has no claim of right to the smallest portion of food.

At nature’s mighty feast there is no vacant cover for him. She tells him to be gone, and will quickly execute her own orders, if he does not work upon the compassion of some of her guests. If these guests get up and make room for him, other intruders immediately appear demanding the same favour. The plenty that before reigned is changed into scarcity; and the happiness of the guests is destroyed by the spectacle of misery and dependence in every part of the hall.

Rapid agricultural advances in the 19th Century proved his main premise wrong, because food production generally more than kept pace with the growing population.

But the idea that the rich are threatened by the desperately poor has cast a long shadow into the 20th Century.

From the 1960s, the World Bank, the UN and a host of independent American philanthropic foundations, such as the Ford and Rockefeller foundations, began to focus on what they saw as the problem of burgeoning Third World numbers.

The believed that overpopulation was the primary cause of environmental degradation, economic underdevelopment and political instability.

Massive populations in the Third World were seen as presenting a threat to Western capitalism and access to resources, says Professor Betsy Hartmann of Hampshire College, Massachusetts, in the US.

“The view of the south is very much put in this Malthusian framework. It becomes just this powerful ideology,” she says.

In 1966, President Lyndon Johnson warned that the US might be overwhelmed by desperate masses, and he made US foreign aid dependent on countries adopting family planning programmes.

Other wealthy countries such as Japan, Sweden and the UK also began to devote large amounts of money to reducing Third World birth rates.

‘Unmet need’

What virtually everyone agreed was that there was a massive demand for birth control among the world’s poorest people, and that if they could get their hands on reliable contraceptives, runaway population growth might be stopped.

But with the benefit of hindsight, some argue that this so-called unmet need theory put disproportionate emphasis on birth control and ignored other serious needs.

Graph of world population figures

“It was a top-down solution,” says Mohan Rao, a doctor and public health expert at Delhi’s Jawaharlal Nehru University.

“There was an unmet need for contraceptive services, of course. But there was also an unmet need for health services and all kinds of other services which did not get attention. The focus became contraception.”

Had the demographic experts worked at the grass-roots instead of imposing solutions from above, suggests Adrienne Germain, formerly of the Ford Foundation and then the International Women’s Health Coalition, they might have achieved a better picture of the dilemmas facing women in poor, rural communities.

“Not to have a full set of health services meant women were either unable to use family planning, or unwilling to – because they could still expect half their kids to die by the age of five,” she says.

India’s sterilisation ‘madness’

File photograph of Sanjay and Indira Gandhi in 1980

Indira Gandhi and her son Sanjay (above) presided over a mass sterilisation campaign. From the mid-1970s, Indian officials were set sterilisation quotas, and sought to ingratiate themselves with superiors by exceeding them. Stories abounded of men being accosted in the street and taken away for the operation. The head of the World Bank, Robert McNamara, congratulated the Indian government on “moving effectively” to deal with high birth rates. Funding was increased, and the sterilising went on.

In Delhi, some 700,000 slum dwellers were forcibly evicted, and given replacement housing plots far from the city centre, frequently on condition that they were either sterilised or produced someone else for the operation. In poorer agricultural areas, whole villages were rounded up for sterilisation. When residents of one village protested, an official is said to have threatened air strikes in retaliation.

“There was a certain madness,” recalls Nina Puri of the Family Planning Association of India. “All rationality was lost.”

Us and them

In 1968, the American biologist Paul Ehrlich caused a stir with his bestselling book, The Population Bomb, which suggested that it was already too late to save some countries from the dire effects of overpopulation, which would result in ecological disaster and the deaths of hundreds of millions of people in the 1970s.

Instead, governments should concentrate on drastically reducing population growth. He said financial assistance should be given only to those nations with a realistic chance of bringing birth rates down. Compulsory measures were not to be ruled out.

Western experts and local elites in the developing world soon imposed targets for reductions in family size, and used military analogies to drive home the urgency, says Matthew Connelly, a historian of population control at Columbia University in New York.

“They spoke of a war on population growth, fought with contraceptive weapons,” he says. “The war would entail sacrifices, and collateral damage.”

Such language betrayed a lack of empathy with their subjects, says Ms Germain: “People didn’t talk about people. They talked of acceptors and users of family planning.”

Emergency measures

Critics of population control had their say at the first ever UN population conference in 1974.

Karan Singh, India’s health minister at the time, declared that “development is the best contraceptive”.

But just a year later, Mr Singh’s government presided over one of the most notorious episodes in the history of population control.

In June 1975, the Indian premier, Indira Gandhi, declared a state of emergency after accusations of corruption threatened her government. Her son Sanjay used the measure to introduce radical population control measures targeted at the poor.

The Indian emergency lasted less than two years, but in 1975 alone, some eight million Indians – mainly poor men – were sterilised.

Yet, for all the official programmes and coercion, many poor women kept on having babies.

And where they did not, it arguably had less to do with coercive population control than with development, just as Karan Singh had argued in 1974, says historian Matt Connelly.

For example, in India, a disparity in birth rates could already be observed between the impoverished northern states and more developed southern regions like Kerala, where women were more likely to be literate and educated, and their offspring more likely to be healthy.

Women there realised that they could have fewer births and still expect to see their children survive into adulthood.

China: ‘We will not allow your baby to live’

Steven Mosher was a Stanford University anthropologist working in rural China who witnessed some of the early, disturbing moments of Beijing’s One Child Policy.

“I remember very well the evening of 8 March, 1980. The local Communist Party official in charge of my village came over waving a government document. He said: ‘The Party has decided to impose a cap of 1% on population growth this year.’ He said: ‘We’re going to decide who’s going to be allowed to continue their pregnancy and who’s going to be forced to terminate their pregnancy.’ And that’s exactly what they did.”

“These were women in the late second and third trimester of pregnancy. There were several women just days away from giving birth. And in my hearing, a party official said: ‘Do not think that you can simply wait until you go into labour and give birth, because we will not allow your baby to live. You will go home alone’.”

Total control

By now, this phenomenon could be observed in another country too – one that would nevertheless go on to impose the most draconian population control of all.

The One Child Policy is credited with preventing some 400 million births in China, and remains in place to this day. In 1983 alone, more than 16 million women and four million men were sterilised, and 14 million women received abortions.

Assessed by numbers alone, it is said to be by far the most successful population control initiative. Yet it remains deeply controversial, not only because of the human suffering it has caused.

A few years after its inception, the policy was relaxed slightly to allow rural couples two children if their first was not a boy. Boy children are prized, especially in the countryside where they provide labour and care for parents in old age.

But modern technology allows parents to discover the sex of the foetus, and many choose to abort if they are carrying a girl. In some regions, there is now a serious imbalance between men and women.

Moreover, since Chinese fertility was already in decline at the time the policy was implemented, some argue that it bears less responsibility for China’s falling birth rate than its supporters claim.

“I don’t think they needed to bring it down further,” says Indian demographer AR Nanda. “It would have happened at its own slow pace in another 10 years.”

Backlash

In the early 1980s, objections to the population control movement began to grow, especially in the United States.

In Washington, the new Reagan administration removed financial support for any programmes that involved abortion or sterilisation.

“If you give women the tools they need – education, employment, contraception, safe abortion – then they will make the choices that benefit society”

Adrienne Germain

The broad alliance to stem birth rates was beginning to dissolve and the debate become more polarised along political lines.

While some on the political right had moral objections to population control, some on the left saw it as neo-colonialism.

Faith groups condemned it as a Western attack on religious values, but women’s groups feared changes would mean poor women would be even less well-served.

By the time of a major UN conference on population and development in Cairo in 1994, women’s groups were ready to strike a blow for women’s rights, and they won.

The conference adopted a 20-year plan of action, known as the Cairo consensus, which called on countries to recognise that ordinary women’s needs – rather than demographers’ plans – should be at the heart of population strategies.

After Cairo

Today’s record-breaking global population hides a marked long-term trend towards lower birth rates, as urbanisation, better health care, education and access to family planning all affect women’s choices.

With the exception of sub-Saharan Africa and some of the poorest parts of India, we are now having fewer children than we once did – in some cases, failing even to replace ourselves in the next generation. And although total numbers are set to rise still further, the peak is now in sight.

Chinese poster from the 1960s of mother and baby, captioned: Practicing birth control is beneficial for the protection of the health of mother and childChina promoted birth control before implementing its one-child policy

Assuming that this trend continues, total numbers will one day level off, and even fall. As a result, some believe the sense of urgency that once surrounded population control has subsided.

The term population control itself has fallen out of fashion, as it was deemed to have authoritarian connotations. Post-Cairo, the talk is of women’s rights and reproductive rights, meaning the right to a free choice over whether or not to have children.

According to Adrienne Germain, that is the main lesson we should learn from the past 50 years.

“I have a profound conviction that if you give women the tools they need – education, employment, contraception, safe abortion – then they will make the choices that benefit society,” she says.

“If you don’t, then you’ll just be in an endless cycle of trying to exert control over fertility – to bring it up, to bring it down, to keep it stable. And it never comes out well. Never.”

Nevertheless, there remain to this day schemes to sterilise the less well-off, often in return for financial incentives. In effect, say critics, this amounts to coercion, since the very poor find it hard to reject cash.

“The people proposing this argue ‘Don’t worry, everything’ s fine now we have voluntary programmes on the Cairo model’,” says Betsy Hartmann.

“But what they don’t understand is the profound difference in power between rich and poor. The people who provide many services in poor areas are already prejudiced against the people they serve.”

Work in progress

For Mohan Rao, it is an example of how even the Cairo consensus fails to take account of the developing world.

“Cairo had some good things,” he says. “However Cairo was driven largely by First World feminist agendas. Reproductive rights are all very well, but [there needs to be] a whole lot of other kinds of enabling rights before women can access reproductive rights. You need rights to food, employment, water, justice and fair wages. Without all these you cannot have reproductive rights.”

Perhaps, then, the humanitarian ideals of Cairo are still a work in progress.

Meanwhile, Paul Ehrlich has also amended his view of the issue.

If he were to write his book today, “I wouldn’t focus on the poverty-stricken masses”, he told the BBC.

“I would focus on there being too many rich people. It’s crystal clear that we can’t support seven billion people in the style of the wealthier Americans.”

Mike Gallager is the producer of the radio programme Controlling People on BBC World Service

Where do you fit into 7 billion?

The world’s population is expected to hit seven billion in the next few weeks. After growing very slowly for most of human history, the number of people on Earth has more than doubled in the last 50 years. Where do you fit into this story of human life? Fill in your date of birth here to find out.

The world’s population will reach 7 billion at the end of October. Don’t panic (The Economist)

Demography

A tale of three islands

Oct 22nd 2011 | from the print edition

 

IN 1950 the whole population of the earth—2.5 billion—could have squeezed, shoulder to shoulder, onto the Isle of Wight, a 381-square-kilometre rock off southern England. By 1968 John Brunner, a British novelist, observed that the earth’s people—by then 3.5 billion—would have required the Isle of Man, 572 square kilometres in the Irish Sea, for its standing room. Brunner forecast that by 2010 the world’s population would have reached 7 billion, and would need a bigger island. Hence the title of his 1968 novel about over-population, “Stand on Zanzibar” (1,554 square kilometres off east Africa).

Brunner’s prediction was only a year out. The United Nations’ population division now says the world will reach 7 billion on October 31st 2011 (America’s Census Bureau delays the date until March 2012). The UN will even identify someone born that day as the world’s 7 billionth living person. The 6 billionth, Adnan Nevic, was born on October 12th 1999 in Sarajevo, in Bosnia. He will be just past his 12th birthday when the next billion clicks over.

That makes the world’s population look as if it is rising as fast as ever. It took 250,000 years to reach 1 billion, around 1800; over a century more to reach 2 billion (in 1927); and 32 years more to reach 3 billion. But to rise from 5 billion (in 1987) to 6 billion took only 12 years; and now, another 12 years later, it is at 7 billion (see chart 1). By 2050, the UN thinks, there will be 9.3 billion people, requiring an island the size of Tenerife or Maui to stand on.

Odd though it seems, however, the growth in the world’s population is actually slowing. The peak of population growth was in the late 1960s, when the total was rising by almost 2% a year. Now the rate is half that. The last time it was so low was in 1950, when the death rate was much higher. The result is that the next billion people, according to the UN, will take 14 years to arrive, the first time that a billion milestone has taken longer to reach than the one before. The billion after that will take 18 years.

Once upon a time, the passing of population milestones might have been cause for celebration. Now it gives rise to jeremiads. As Hillary Clinton’s science adviser, Nina Fedoroff, told the BBC in 2009, “There are probably already too many people on the planet.” But the notion of “too many” is more flexible than it seems. The earth could certainly not support 10 billion hunter-gatherers, who used much more land per head than modern farm-fed people do. But it does not have to. The earth might well not be able to support 10 billion people if they had exactly the same impact per person as 7 billion do today. But that does not necessarily spell Malthusian doom, because the impact humans have on the earth and on each other can change.

For most people, the big questions about population are: can the world feed 9 billion mouths by 2050? Are so many people ruining the environment? And will those billions, living cheek-by-jowl, go to war more often? On all three counts, surprising as it seems, reducing population growth any more quickly than it is falling anyway may not make much difference.

Start with the link between population and violence. It seems plausible that the more young men there are, the more likely they will be to fight. This is especially true when groups are competing for scarce resources. Some argue that the genocidal conflict in Darfur, western Sudan, was caused partly by high population growth, which led to unsustainable farming and conflicts over land and water. Land pressure also influenced the Rwandan genocide of 1994, as migrants in search of a livelihood in one of the world’s most densely populated countries moved into already settled areas, with catastrophic results.

But there is a difference between local conflicts and what is happening on a global scale. Although the number of sovereign states has increased almost as dramatically as the world’s population over the past half-century, the number of wars between states fell fairly continuously during the period. The number of civil wars rose, then fell. The number of deaths in battle fell by roughly three-quarters. These patterns do not seem to be influenced either by the relentless upward pressure of population, or by the slackening of that pressure as growth decelerates. The difference seems to have been caused by fewer post-colonial wars, the ending of cold-war alliances (and proxy wars) and, possibly, the increase in international peacekeepers.

More people, more damage?

Human activity has caused profound changes to the climate, biodiversity, oceanic acidity and greenhouse-gas levels in the atmosphere. But it does not automatically follow that the more people there are, the worse the damage. In 2007 Americans and Australians emitted almost 20 tonnes of carbon dioxide each. In contrast, more than 60 countries—including the vast majority of African ones—emitted less than 1 tonne per person.

This implies that population growth in poorer countries (where it is concentrated) has had a smaller impact on the climate in recent years than the rise in the population of the United States (up by over 50% in 1970-2010). Most of the world’s population growth in the next 20 years will occur in countries that make the smallest contribution to greenhouse gases. Global pollution will be more affected by the pattern of economic growth—and especially whether emerging nations become as energy-intensive as America, Australia and China.

Population growth does make a bigger difference to food. All things being equal, it is harder to feed 7 billion people than 6 billion. According to the World Bank, between 2005 and 2055 agricultural productivity will have to increase by two-thirds to keep pace with rising population and changing diets. Moreover, according to the bank, if the population stayed at 2005 levels, farm productivity would have to rise by only a quarter, so more future demand comes from a growing population than from consumption per person.

Increasing farm productivity by a quarter would obviously be easier than boosting it by two-thirds. But even a rise of two-thirds is not as much as it sounds. From 1970-2010 farm productivity rose far more than this, by over three-and-a-half times. The big problem for agriculture is not the number of people, but signs that farm productivity may be levelling out. The growth in agricultural yields seems to be slowing down. There is little new farmland available. Water shortages are chronic and fertilisers are over-used. All these—plus the yield-reductions that may come from climate change, and wastefulness in getting food to markets—mean that the big problems are to do with supply, not demand.

None of this means that population does not matter. But the main impact comes from relative changes—the growth of one part of the population compared with another, for example, or shifts in the average age of the population—rather than the absolute number of people. Of these relative changes, falling fertility is most important. The fertility rate is the number of children a woman can expect to have. At the moment, almost half the world’s population—3.2 billion—lives in countries with a fertility rate of 2.1 or less. That number, the so-called replacement rate, is usually taken to be the level at which the population eventually stops growing.

The world’s decline in fertility has been staggering (see chart 2). In 1970 the total fertility rate was 4.45 and the typical family in the world had four or five children. It is now 2.45 worldwide, and lower in some surprising places. Bangladesh’s rate is 2.16, having halved in 20 years. Iran’s fertility fell from 7 in 1984 to just 1.9 in 2006. Countries with below-replacement fertility include supposedly teeming Brazil, Tunisia and Thailand. Much of Europe and East Asia have fertility rates far below replacement levels.

The fertility fall is releasing wave upon wave of demographic change. It is the main influence behind the decline of population growth and, perhaps even more important, is shifting the balance of age groups within a population.

When gold turns to silver

A fall in fertility sends a sort of generational bulge surging through a society. The generation in question is the one before the fertility fall really begins to bite, which in Europe and America was the baby-boom generation that is just retiring, and in China and East Asia the generation now reaching adulthood. To begin with, the favoured generation is in its childhood; countries have lots of children and fewer surviving grandparents (who were born at a time when life expectancy was lower). That was the situation in Europe in the 1950s and in East Asia in the 1970s.

But as the select generation enters the labour force, a country starts to benefit from a so-called “demographic dividend”. This happens when there are relatively few children (because of the fall in fertility), relatively few older people (because of higher mortality previously), and lots of economically active adults, including, often, many women, who enter the labour force in large numbers for the first time. It is a period of smaller families, rising income, rising life expectancy and big social change, including divorce, postponed marriage and single-person households. This was the situation in Europe between 1945 and 1975 (“les trente glorieuses”) and in much of East Asia in 1980-2010.

But there is a third stage. At some point, the gilded generation turns silver and retires. Now the dividend becomes a liability. There are disproportionately more old people depending upon a smaller generation behind them. Population growth stops or goes into reverse, parts of a country are abandoned by the young and the social concerns of the aged grow in significance. This situation already exists in Japan. It is arriving fast in Europe and America, and soon after that will reach East Asia.

A demographic dividend tends to boost economic growth because a large number of working-age adults increases the labour force, keeps wages relatively low, boosts savings and increases demand for goods and services. Part of China’s phenomenal growth has come from its unprecedentedly low dependency ratio—just 38 (this is the number of dependents, children and people over 65, per 100 working adults; it implies the working-age group is almost twice as large as the rest of the population put together). One study by Australia’s central bank calculated that a third of East Asia’s GDP growth in 1965-90 came from its favourable demography. About a third of America’s GDP growth in 2000-10 also came from its increasing population.

The world as a whole reaped a demographic dividend in the 40 years to 2010. In 1970 there were 75 dependents for every 100 adults of working age. In 2010 the number of dependents dropped to just 52. Huge improvements were registered not only in China but also in South-East Asia and north Africa, where dependency ratios fell by 40 points. Even “ageing” Europe and America ended the period with fewer dependents than at the beginning.

A demographic dividend does not automatically generate growth. It depends on whether the country can put its growing labour force to productive use. In the 1980s Latin America and East Asia had similar demographic patterns. But while East Asia experienced a long boom, Latin America endured its “lost decade”. One of the biggest questions for Arab countries, which are beginning to reap their own demographic dividends, is whether they will follow East Asia or Latin America.

But even if demography guarantees nothing, it can make growth harder or easier. National demographic inheritances therefore matter. And they differ a lot.

Where China loses

Hania Zlotnik, the head of the UN’s Population Division, divides the world into three categories, according to levels of fertility (see map). About a fifth of the world lives in countries with high fertility—3 or more. Most are Africans. Sub-Saharan Africa, for example, is one of the fastest-growing parts of the world. In 1975 it had half the population of Europe. It overtook Europe in 2004, and by 2050 there will be just under 2 billion people there compared with 720m Europeans. About half of the 2.3 billion increase in the world’s population over the next 40 years will be in Africa.

The rest of the world is more or less equally divided between countries with below-replacement fertility (less than 2.1) and those with intermediate fertility (between 2.1 and 3). The first group consists of Europe, China and the rest of East Asia. The second comprises South and South-East Asia, the Middle East and the Americas (including the United States).

The low-fertility countries face the biggest demographic problems. The elderly share of Japan’s population is already the highest in the world. By 2050 the country will have almost as many dependents as working-age adults, and half the population will be over 52. This will make Japan the oldest society the world has ever known. Europe faces similar trends, less acutely. It has roughly half as many dependent children and retired people as working-age adults now. By 2050 it will have three dependents for every four adults, so will shoulder a large burden of ageing, which even sustained increases in fertility would fail to reverse for decades. This will cause disturbing policy implications in the provision of pensions and health care, which rely on continuing healthy tax revenues from the working population.

At least these countries are rich enough to make such provision. Not so China. With its fertility artificially suppressed by the one-child policy, it is ageing at an unprecedented rate. In 1980 China’s median age (the point where half the population is older and half younger) was 22 years, a developing-country figure. China will be older than America as early as 2020 and older than Europe by 2030. This will bring an abrupt end to its cheap-labour manufacturing. Its dependency ratio will rise from 38 to 64 by 2050, the sharpest rise in the world. Add in the country’s sexual imbalances—after a decade of sex-selective abortions, China will have 96.5m men in their 20s in 2025 but only 80.3m young women—and demography may become the gravest problem the Communist Party has to face.

Many countries with intermediate fertility—South-East Asia, Latin America, the United States—are better off. Their dependency ratios are not deteriorating so fast and their societies are ageing more slowly. America’s demographic profile is slowly tugging it away from Europe. Though its fertility rate may have fallen recently, it is still slightly higher than Europe’s. In 2010 the two sides of the Atlantic had similar dependency rates. By 2050 America’s could be nearly ten points lower.

But the biggest potential beneficiaries are the two other areas with intermediate fertility—India and the Middle East—and the high-fertility continent of Africa. These places have long been regarded as demographic time-bombs, with youth bulges, poverty and low levels of education and health. But that is because they are moving only slowly out of the early stage of high fertility into the one in which lower fertility begins to make an impact.

At the moment, Africa has larger families and more dependent children than India or Arab countries and is a few years younger (its median age is 20 compared with their 25). But all three areas will see their dependency ratios fall in the next 40 years, the only parts of the world to do so. And they will keep their median ages low—below 38 in 2050. If they can make their public institutions less corrupt, keep their economic policies outward-looking and invest more in education, as East Asia did, then Africa, the Middle East and India could become the fastest-growing parts of the world economy within a decade or so.

Here’s looking at you

Demography, though, is not only about economics. Most emerging countries have benefited from the sort of dividend that changed Europe and America in the 1960s. They are catching up with the West in terms of income, family size and middle-class formation. Most say they want to keep their cultures unsullied by the social trends—divorce, illegitimacy and so on—that also affected the West. But the growing number of never-married women in urban Asia suggests that this will be hard.

If you look at the overall size of the world’s population, then, the picture is one of falling fertility, decelerating growth and a gradual return to the flat population level of the 18th century. But below the surface societies are being churned up in ways not seen in the much more static pre-industrial world. The earth’s population may never need a larger island than Maui to stand on. But the way it arranges itself will go on shifting for centuries to come.

Occupy Wall Street turns to pedal power (The Raw Story)

By Muriel Kane
Sunday, October 30, 2011

The Occupy Wall Street protesters who were left without power after their gas-fueled generators were confiscated by New York City authorities on Friday may have found the idea solution in the form of a stationary bicycle hooked up to charge batteries.

Stephan Keegan of the non-profit environmental group Time’s Up showed off one of the bikes to The Daily News, explaining that OWS’s General Assembly has already authorized payment for additional bikes and that “soon we’ll have ten of these set up and we’ll be powering the whole park with batteries.”

Protester Lauren Minis told CBS New York, “We’ve got five bike-powered generator systems that are coming from Boston and we’ve got five more plus other ones that are going to supplement as well so we’re completely, completely off the grid.”

According to CBS, “Insiders at Occupy Wall Street say they expect to have their media center and the food service area fully powered and illuminated by Monday.”

“We need some exercise,” Keegan explained enthusiastically, “and we’ve got a lot of volunteers, so we should be able to power these, no problem. … We did an energy survey of the whole park, found out how much energy we were using. …. Ten will give us twice as much power.”

Keegan also boasted that the system is “very clean” and is environmentally superior not only to fossil fuel but even to solar panels, because it uses almost entirely recycled materials.

[Click que image to watch video, or click here]

Brasil já pesquisa efeitos da mudança do clima (Valor Econômico)

JC e-mail 4373, de 27 de Outubro de 2011.

As pesquisas em mudança climática no Brasil começam a mudar de rumo. Se há alguns anos o foco estava nos esforços de redução das emissões dos gases-estufa, agora miram a adaptação ao fenômeno.

“Sabemos que nos próximos cinco ou dez anos não há perspectiva para que seja firmado internacionalmente um acordo de redução nas emissões de gases-estufa de grandes proporções, com cortes entre 70% a 80%”, diz o físico Paulo Artaxo, da USP, um estudioso da Amazônia. “Esse panorama é cada vez mais longínquo. Portanto é fundamental que se estudem estratégias de adaptação.”

Em outras palavras, as pesquisas devem se voltar para os efeitos da mudança do clima nos ecossistemas, em ambientes urbanos, em contextos sociais. “Não é uma questão de dinheiro, mas de direcionamento dos estudos”, diz Artaxo, membro do conselho diretor do Painel Brasileiro de Mudança Climática, órgão científico ligado aos ministérios da Ciência e Tecnologia e Ambiente. “O País precisa se preparar mais adequadamente para a mudança climática.”

“É preciso pesquisar mais, por exemplo, as alterações no ciclo hidrológico”, cita Reynaldo Victoria, coordenador do Programa Fapesp de Pesquisa sobre Mudanças Climáticas Globais. “Saber onde vai chover mais e onde vai chover menos”, explica. É um dos braços da pesquisa de Artaxo na Amazônia. “Porque não se quer construir uma hidrelétrica onde choverá muito menos nas próximas décadas”, ilustra o físico.

O programa de mudança climática da Fapesp já conta com investimentos de US$ 30 milhões em projetos na área. É um dos braços mais novos da fundação, mas já está ganhando musculatura. Tem 21 projetos em andamento, 14 contratos novos, dois outros em parceria com instituições estrangeiras, como o britânico Natural Environment Research Council (Nerc) ou a francesa Agence Nationale de la Recherche (ANR). Em dez anos, a previsão é de investimentos de mais de R$ 100 milhões.

As pesquisas começam a se voltar para campos pouco estudados. “Vamos analisar questões críticas para o Brasil”, diz Artaxo. Ele cita, por exemplo, o ciclo de carbono na Amazônia – algo muito mais complexo do que estudar a fotossíntese e a respiração das plantas.

Victoria, que também é professor do Centro de Energia Nuclear Aplicada à Agricultura (Cena-USP), diz que a intenção do programa é mirar campos novos, como entender qual o papel do Atlântico Sul no clima da região Sul do Brasil e Norte da Argentina. Outro exemplo é obter registros históricos na área de paleoclima.

Os impactos na área de saúde também serão mais estudados. Já se sabe que a mudança do clima faz com que doenças que não existiam em determinado lugar, passem a ocorrer. A dengue, por exemplo, encontra ambiente propício em regiões mais quentes. Entre as novas pesquisas de doenças emergentes há o estudo de um tipo de leishmaniose, comum na Bolívia e no Peru, que não existia no Brasil e agora ameaça surgir no Acre. Provocada por um mosquito, a doença causa uma infecção cutânea e pode ser mortal.

Os pesquisadores falaram sobre seus projetos durante a Fapesp Week, evento que faz parte da comemoração pelos 50 anos da Fundação de Amparo à Pesquisa do Estado de São Paulo e terminou ontem, em Washington.

Terra, que Tempo é Esse? (PUC)

Por Gabriela Caesar – Do Portal, 28/10/2011. Fotos: Eduardo de Holanda.

Embora a “soberania nacional e o mercado criem cenário conflitoso”, a população está consciente de que o estilo de vida precisa mudar, acredita o antropólogo Roberto da Matta. Já a jornalista Sônia Bridi pondera que “não adianta discutir ou culpar quem começou”, mas trocar o modelo de produção. Reunidos na PUC-Rio para o debate “Terra, que tempo é esse?” (assista às partes 1 e 2 abaixo), nesta segunda-feira (24), com mediação do professor Paulo Ferracioli, do Departamento de Economia, eles reforçaram a importância de um desenvolvimento mais alinhado às demandas ambientais.

O secretário estadual do Ambiente, Carlos Minc (PT-RJ), acrescentou que a negociação com grandes empresas, como a Companhia Siderúrgica Nacional (CSN), deve incluir o acompanhamento de tecnologias que possam não só diminuir as agressões ambientais, mas também resguardar a saúde dos trabalhadores. Ainda em relação a tecnologias “ecologicamente corretas”, Sônia Bridi afirmou que o estado do Rio “erra ao se decidir por ônibus, em vez de veículo leve sobre trilho”.

Diante dos aproximadamente cem estudantes que acompanhavam o debate no auditório do RDC, Roberto da Matta destacou que a mudança para um estilo de vida mais saudável e comprometido com o ambiente revela-se igualmente importante para combater outro problema, segundo ele, agravado pela globalização: a obesidade mórbida, que dá origem ao neologismo “globesidade”. Para diminuir o avanço da doença, que aumentou em um terço na China, o antropólogo é categórico ao propor um padrão social menos consumista.

Usina de contrastes e um dos principais lubrificantes do consumo mundial, a China encara o desafio de reduzir as faturas ambientais – alvo recorrente de críticas em foruns internacionais – e de saúde. Para Sônia Bridi, a locomotiva da economia global investe no longo prazo:

– Até 2020, a China terá 20 mil quilômetros de trem bala. Eles estão preocupados com isso, porque a qualidade da saúde deles está piorando muito.

O trilho do desenvolvimento responsável não passa necessariemente por grandes investimentos. O diretor do Núcleo Interdisciplinar do Meio Ambiente (Nima), Luiz Felipe Guanaes, lembrou que iniciativas como a coleta seletiva, implantada em junho deste ano no campus da PUC-Rio, também aproximam o cidadão de um maior compromisso ambiental e social. Outra oportunidade de a “comunidade se engajar na causa”, lembrou ele, será o encontro de pesquisadores e especialistas na universidade em 2012, para a Rio+20, em parceria com a ONU.

Sônia também contou bastidores da série de reportagem “Terra, que país é esse?” – que mostrou os avanços do aquecimento global e nomeou o debate. No Peru, ela e o repórter cinematográfico Paulo Zero notaram o impacto no cotidiano, até em rituais.

– Num determinado dia, próximo à festa do Corpus Christi, confrarias do país inteiro sobem certa montanha e colhem blocos de gelo. Tiveram de mudar o ritual, que vem do tempo dos incas, incorporado pelo cristianismo. Eles pararam de tirar gelo.

Paulo Zero admite que a produção jornalística, atrelada ao cumprimento de prazos “curtos”, dificulta o tratamento do assunto. Outra barreira, diz Paulo, pode ser a logística. Para a reportagem na Groelândia, por exemplo, ele e Sônia navegaram por seis horas até chegar à ilha. Se o trajeto atrapalhou, a sorte foi uma aliada.

– Chegamos à geleira e, em cinco minutos, caiu um grande bloco de gelo. Ficamos mais três horas lá e não caiu mais nenhum pedaço de gelo. Ou seja, estávamos na hora certa e no lugar certo – contou o cinegrafista.

Parte 1 (clique na imagem)

Parte 2 (clique na imagem)

Limite próximo (Fapesp)

Amazônia está muito próxima de um ponto de não retorno para sua sobrevivência, diz Thomas Lovejoy, da George Mason University, no simpósio internacional FAPESP Week (foto: JVInfante Photography/Wilson Center)

27/10/2011

Agência FAPESP – A Amazônia está muito próxima de um ponto de não retorno para sua sobrevivência, devido a uma combinação de fatores que incluem aquecimento global, desflorestamento e queimadas que minam seu sistema hidrogeológico.

A advertência foi feita por Thomas Lovejoy, atualmente professor da George Mason University, no Estado de Virgínia, EUA, no primeiro dia do simpósio internacional FAPESP Week, em Washington, nesta segunda-feira.

O biólogo Lovejoy, um dos mais importantes especialistas em Amazônia do mundo, começou a trabalhar na floresta brasileira em 1965, “apenas três anos depois da fundação da FAPESP”, lembrou.

Apesar de muita coisa positiva ter acontecido nestes 47 anos (“quando pisei pela primeira vez em Belém, só havia uma floresta nacional e uma área indígena demarcada e quase nenhum cientista brasileiro se interessava em estudar a Amazônia; hoje esse situação está totalmente invertida”), também apareceram no período diversos fatores de preocupação.

Lovejoy acredita que restam cinco anos para inverter as tendências em tempo de evitar problemas de maior gravidade. O aquecimento da temperatura média do planeta já está na casa de 0,8 grau centígrado. Ele acredita que o limite aceitável é de 2 graus centígrados e que ele pode ser alcançado até 2016 se nada for feito para efetivamente reduzi-lo.

O objetivo fixado nas mais recentes reuniões sobre o clima em Cancun e Copenhague de limitar o aumento médio da temperatura média global em 2 graus centígrados pode ser insuficiente, na opinião de Lovejoy, devido a essa conjugação de elementos.

De forma similar, Lovejoy crê que 20% de desflorestamento em relação ao tamanho original da Amazônia é o máximo que ela consegue suportar e o atual índice já é de 17% (em 1965, a taxa era de 3%).

A boa notícia, diz o biólogo, é que há bastante terra abandonada, sem nenhuma perspectiva de utilização econômica na Amazônia e que pode ser de alguma forma reflorestada, o que poderia proporcionar certa margem de segurança.

Em sua palestra, Lovejoy saudou vários cientistas brasileiros como exemplares em excelência em suas pesquisas. Entre outros, Eneas Salati, Carlos Nobre e Carlos Joly.

The Post-Normal Seduction of Climate Science (Forbes)

William Pentland10/14/2011 @ 12:22AM |2,770 views

In early 2002, former U.S. Defense Secretary Donald Rumsfeld explained why the lack of evidence linking Saddam Hussein with terrorist groups did not mean there was no connection during a televised press conference.

“[T]here are known ‘knowns’ – there are things we know we know,” said Rumsfeld. “We also know there are known ‘unknowns’ – that is to say we know there are some things we do not know. But there are also unknown ‘unknowns’ – the ones we don’t know we don’t know . . . it is the latter category that tend to be the difficult ones.”

Rumsfeld turned out to be wrong about Hussein, but what if he had been talking about global warming?  Well, he probably would have been on to something there.  Unknowns of any ilk are a real pickle in climate science.

Indeed, uncertainty in climate science has induced a state of severe political paralysis. The trouble is that nobody really knows why. A rash of recent surveys and studies have exonerated most of the usual suspects – scientific illiteracy, industry distortions, skewed media coverage.

Now, the climate-science community is scrambling to crack the code on the “uncertainty” conundrum. Exhibit A: the October 2011 issue of the journal Climatic Change, the closest thing in climate science to gospel truth, which is devoted entirely to the subject of uncertainty.

While I have yet to digest all of the dozen or so essays, I suspect they are only the opening salvo in what is will soon become a robust debate about the significance of uncertainty in climate-change science. The first item up on the chopping block is called post-normal science (PNS).

PNS is a model of the scientific process pioneered by Jerome Ravetz and Silvio Funtowicz, which describes the peculiar challenges science encounters where “facts are uncertain, values in dispute, stakes high and decisions urgent.” Unlike “normal” science in the sense described by the philosopher of science Thomas Kuhn, post-normal science commonly crosses disciplinary lines and involves new methods, instruments and experimental systems.

Judith Curry, a professor at Georgia Tech, weighs the wisdom of taking the plunge on PNS in an excellent piece called “Reasoning about climate uncertainty.” Drawing on the work of Dutch wunderkind, Jeroen van der Sluijs, Curry calls on the Intergovernmental Panel on Climate Change to stop marginalizing uncertainty and get real about bias in the consensus building process. Curry writes:

The consensus approach being used by the IPCC has failed to produce a thorough portrayal of the complexities of the problem and the associated uncertainties in our understanding . . . Better characterization of uncertainty and ignorance and a more realistic portrayal of confidence levels could go a long way towards reducing the “noise” and animosity portrayed in the media that fuels the public distrust of climate science and acts to stymie the policy process.

PNS is especially seductive in the context of uncertainty. Not surprisingly, Curry suggests that instituting PNS-like strategies at the IPCC “could go a long way towards reducing the ‘noise’ and animosity” surrounding climate-change science.

While I personally believe PNS is persuasive, the PNS model provokes something closer to revulsion in many people. Last year, members of the U.S. House of Representatives filed a petition challenging the U.S. Environmental Protection Agency‘s Greenhouse Gas Endangerment seemed less sanguine about post-normal science:

. . . the conclusions of organizing bodies, especially the IPCC, cannot be said to reflect scientific “consensus” in any meaningful sense of that word. Instead, they reflect a political movement that has commandeered science to the service of its agenda. This is “post-normal science”: the long-dreaded arrival of deconstructionism to the natural sciences, according to which scientific quality is determined not by its fidelity to truth, but by its fidelity to the political agenda.

It seems unlikely that taking the PNS plunge would appreciably improve the U.S. public’s perception of the credibility, legitimacy and salience of climate-change assessments. This probably says more about Americans than it does about the analytic force of the PNS model.

Let’s face it. Americans do not agree on a whole hell of a lot. And they never have. Many U.S. institutions were deliberately designed to tolerate the coexistence of free states and slave-owning states. Ironically, Americans appear to agree more on climate-change science than other high-profile scientific controversies like the safety of genetically-modified organisms.

National Science Foundation

While it pains me to admit this, I am increasingly convinced that the IPCC’s role in assessing the science of climate change needs to be scaled back. The IPCC was an overly optimistic experiment in international governance designed for a world that never materialized.  The U.N. General Assembly established the IPCC in the months immediately preceding the fall of the Berlin Wall. Only two few years later, the IPCC’s first assessment report and the creation of the U.N. Framework Convention on Climate Change coincided with the collapse of the Soviet Union and the end of the Cold War.

A new world order seemed to be dawning in those days, which is probably why it seemed like a good idea to ask scientists to tell us what constitutes “dangerous climate change.”   Two decades and two world trade towers later, the world is a decidedly less hospitable place for institutions like the IPCC.

The proof is in the pudding – or, in this case, the atmosphere.

Climate Change Tumbles Down Europe’s Political Agenda as Economic Worries Take the Stage (N.Y. Times)

By JEREMY LOVELL of ClimateWire. Published: October 13, 2011

LONDON — Climate change has all but fallen off the political agenda across Europe as the resurging economic crisis empties national coffers and shakes economic confidence, and the public and the press turn their attention to more immediate issues of rising fuels bills and joblessness, analysts say.

Sputtering economies, a shift of attention to looming elections and the prospect of little or no movement in the December climate talks in Durban, South Africa, have combined to take the political momentum out of an issue that was a major cause in Europe.

“It is way down the agenda and will not feature in elections,” said Edward Cameron, director of the World Resources Institute think tank’s international climate initiative, on the sidelines of a meeting on climate change at London’s Chatham House think tank. “At a time of joblessness and fiscal crises, it is very difficult to advance the climate change issue.”

That is as true for next year’s presidential elections in the United States as it will be in France, despite the fact that there has been a series of environmental disasters, from the Texas drought this year to Russia’s heat wave and consequent steep rise in wheat prices last year.

According to acclaimed NASA scientist James Hansen, who has been warning of impending climatic doom for decades, the lack of focus on these events is in no small part due to the fact that scientists are poor communicators while the climate change skeptics have mounted a smoothly run campaign to capitalize on any mistakes and admissions of uncertainty.

“There is a strong campaign by those people who want to continue the fossil fuel business as usual. Climate contrarians … have managed in the public’s eye to muddy the waters enough that there is uncertainty why should we do anything yet,” he said on a visit to London’s Royal Society for a meeting on lessons to be learned from past climate change battles.

“They have been winning the argument in the last several years, even though the science has become clearer,” he added.

Nuclear power issue distracts Berlin

In Germany, where a generous feed-in tariff scheme has produced some 28 gigawatts of wind power capacity and more than 18 GW of solar photovoltaic capacity, Chancellor Angela Merkel’s coalition government was forced into an abrupt U-turn on a controversial move to extend the lives of the country’s fleet of nuclear power plants. There was a political revolt after the March 11 nuclear disaster at Fukushima in Japan.

The oldest seven of Germany’s nuclear plants were closed immediately after Fukushima and will now never reopen, while the remainder will close by 2022.

This has had the perverse effect in a country proud of its renewable energy efforts of increasing the use of coal-fired power plants and increasing the likelihood of new coal- or gas-fired plants being built. The price tag will include higher carbon emissions at exactly the time that the Germany along with the rest of the European Union is pledged to cut emissions.

While political observers believe the climate change issue will come back to the fore at some point in Germany — a country where the Greens have played a pivotal political role — the nuclear power issue is so politically charged that it is off the agenda for now.

Even in the United Kingdom, which has a huge wind energy program and where the Conservative-Liberal Democrat coalition came to power 15 months ago pledging to be the “greenest government ever,” there are major signs of backsliding. A long-awaited energy bill has been shelved, and renewable energy support costs and carbon emission reduction targets are either under review or about to be.

At the Conservative Party’s annual conference earlier this month, climate change was consigned to a brief debate on the opening Sunday, when delegates were mostly just arriving and finding their way around or still traveling to get there.

Damned by faint praise in London

Prime Minister David Cameron did not mention the issue in his speech to the conference — a performance that usually sets the broad agenda for the following year — and Chancellor of the Exchequer George Osborne caused environmental outrage but satisfaction to the party’s right wing by pledging that the United Kingdom would not go any faster than its E.U. neighbors on emission cuts.

This is despite the fact that the United Kingdom has a legal target to cut its carbon emissions by at least 80 percent below 1990 levels by 2050, with cuts of 35 percent by 2022 and 50 percent by 2025, whereas the European Union’s goal is 20 percent by 2020.

It was widely reported that the 2022 target was only agreed to after a major battle in the Cabinet between supporters of Conservative Osborne and those of Liberal Democrat Energy and Climate Change Minister Chris Huhne. It has since been announced that the carbon targets will be reviewed in 2014.

Even in London, where charismatic Conservative Mayor Boris Johnson came to power in 2008 in part on a green ticket, the issue has largely been parked and replaced by transport in the run-up to next year’s mayoral elections. The city’s aging transport system is feared likely to come under massive strain during the 2012 Olympic Games.

Then there is the strange case of a strategic plan on adapting London to climate change, the draft of which was launched with great fanfare and declarations of urgency in February 2010. It was on the brink of publication in September 2010, but after that, it appeared to have vanished without trace.

At the same time, most members of City Hall’s climate change team, set up under the previous Labour administration, have been moved to other jobs.

‘Too difficult — and not a vote winner’

“Political leaders get it, but the treasuries don’t. The men with the money don’t want to be first movers,” said Nick Mabey, co-founder of environmental think tank E3G. “But the political froth has gone. It has become too difficult — and not a vote winner.”

Compounding that problem, at least in the United Kingdom, has been a series of reports underscoring the likely high cost to households of green energy policies at a time when the prices of domestic electricity and gas are already rising sharply.

A recent opinion poll found that the climate change issue has been replaced by concerns over rising fuel bills and energy security.

But Mabey is not too concerned. While the subject may be off the immediate political agenda, behind the scenes, the more enlightened corporate leaders and investment fund managers have been making their own calculations. They are moving their money into the low-carbon economic transformation that in some cases is already profitable and in many eyes essential and inevitable.

The main danger, they say, is that if climate change as a driver of action is allowed to languish too long and become too invisible while energy becomes the main motivator, it will become far harder to resurrect climate change.

For Mabey and WRI’s Cameron, while the deep and seemingly returning global economic crisis has proved a serious distraction internationally as well as domestically, all is not lost.

For a number of reasons, including the rise of a new and major climate player — China — and a series of new scientific reports on climate change due over the next two or three years, 2015 will be the next pivotal moment for the world to take collective action, they say.

“Climate change doesn’t keep people awake at night. Our task for the next few years is to move it back up the political agenda again,” said WRI’s Cameron.

Copyright 2011 E&E Publishing. All Rights Reserved.

Little Ice Age Shrank Europeans, Sparked Wars (NetGeo)

Study aims to scientifically link climate change to societal upheaval.

London’s River Thames, frozen over in 1677. Painting by Abraham Hondius via Heritage Images/Corbis

Brian Handwerk, for National Geographic News

Published October 3, 2011

Pockmarked with wars, inflation, famines and shrinking humans, the 1600s in Europe came to be called the General Crisis.

But whereas historians have blamed those tumultuous decades on growing pains between feudalism and capitalism, a new study points to another culprit: the coldest stretch of the climate change period known as the Little Ice Age.

(Also see “Sun Oddly Quiet—Hints at Next ‘Little Ice Age’?”)

The Little Ice Age curbed agricultural production and eventually led to the European crisis, according to the authors of the study—said to be the first to scientifically verify cause-and-effect between climate change and large-scale human crises.

Prior to the industrial revolution, all European countries were by and large agrarian, and as study co-author David Zhang pointed out, “In agricultural societies, the economy is controlled by climate,” since it dictates growing conditions.

A team led by Zhang, of the University of Hong Kong, pored over data from Europe and other the Northern Hemisphere regions between A.D. 1500 to 1800.

The team compared climate data, such as temperatures, with other variables, including population sizes, growth rates, wars and other social disturbances, agricultural production figures and famines, grain prices, and wages.

The authors say some effects, such as food shortages and health problems, showed up almost immediately between 1560 and 1660—the Little Ice Age’s harshest period—during which growing seasons shortened and cultivated land shrank.

As arable land contracted, so too did Europeans themselves, the study notes. Average height followed the temperature line, dipping nearly an inch (two centimeters) during the late 1500s, as malnourishment spread, and rising again only as temperatures climbed after 1650, the authors found.

(Related: “British Have Changed Little Since Ice Age, Gene Study Says.”)

Others effects—such as famines, the Thirty Years’ War (1618-48), or the 164 Manchu conquest of China—took decades to manifest. “Temperature is not a direct cause of war and social disturbance,” Zhang said. “The direct cause of war and social disturbance is the grain price. That is why we say climate change is the ultimate cause.”

The new study is both history lesson and warning, the researchers added.

As our climate changes due to global warming (see interactive), Zhang said, “developing countries will suffer more, because large populations in these countries [directly] rely on agricultural production.”

More: “Climate Change Killed Neanderthals, Study Says” >>

Índios invadem obras de Belo Monte e bloqueiam Transamazônica (FSP)

27/10/2011 – 14h21

AGUIRRE TALENTO
DE BELÉM

O canteiro de obras da hidrelétrica de Belo Monte, localizado no município de Vitória do Xingu (oeste do Pará, a 945 km de Belém), foi invadido na manhã desta quinta-feira (27) em um protesto de indígenas, pescadores e moradores da região.

Eles também bloquearam a rodovia Transamazônica na altura do quilômetro 52, onde fica a entrada do canteiro de obras da usina.

O protesto, que começou às 5h da manhã, foi organizado durante seminário realizado nesta semana, em Altamira (também no oeste, a 900 km de Belém), que discutiu os impactos da instalação de usinas hidrelétricas na região.

Os seguranças permitiram a entrada dos manifestantes sem oferecer resistência, e os funcionários da empresa não apareceram para trabalhar. Com isso, as obras estão paradas.

“Acreditamos que a empresa ficou sabendo de nossa manifestação e não quis entrar em confronto”, afirmou Eden Magalhães, secretário-executivo do Cimi (Conselho Indigenista Missionário), uma das entidades participantes do protesto.

A Polícia Rodoviária Federal confirmou a ocorrência do protesto, mas ainda não sabe estimar a quantidade de pessoas presentes.Segundo ele, há cerca de 600 pessoas no local, entre índios, pescadores, população ribeirinha e até estudantes.

Os manifestantes exigem a presença de algum integrante do governo federal no local e pedem a paralisação das obras.

Ontem, foi adiado mais uma vez o julgamento na Justiça Federal sobre o licenciamento da usina de Belo Monte. O julgamento está empatado com um voto a favor da construção da usina e um voto contra. Falta o voto de desempate, mas ainda não há previsão de quando o processo voltará a ser colocado em pauta.

 

Novo Maracanã já nasce velho (O Globo)

André Trigueiro

O Globo, 27/10/11

O projeto do novo Maracanã confirma a exclusão de um item absolutamente importante para que qualquer projeto de engenharia do gênero possa ser chamado de “moderno e sustentável”. Apesar do variado cardápio de estádios de futebol espalhados pelo mundo com aproveitamento energético do sol, a caríssima obra de reconstrução do Maracanã – quase 1 bilhão de reais – ignorou essa possibilidade.

Estranho que isso tenha acontecido num país onde o sol brilha em média 280 dias por ano. Ainda mais estranho que isso tenha acontecido na cidade que sediou a Rio-92, que vai sediar a Rio+20, e que está situada na mesma faixa de exposição solar que Sidney, na Austrália, que se notabilizou por realizar os primeiros Jogos Verdes da História, inteiramente abastecidos de energia solar.

Cobri como jornalista os Jogos de Sidney em 2000 e lembro-me das imensas estruturas com placas fotovoltaicas que captavam energia solar para iluminar as competições no estádio olímpico, no Superdome e em todas as instalações esportivas. A Vila Olímpica com 665 casas se transformou no maior bairro dotado de energia solar do planeta. O porta-voz do Comitê Olímpico Internacional, o australiano Michael Bland, justificou assim os investimentos em energia solar: “Queremos fazer com que a energia solar se torne popular em todos os países. É ridículo que, na Austrália, todas as casas não usem um captador de energia solar. Temos os telhados, temos o sol, e os desperdiçamos. É um jeito estúpido de levar a vida”.

Que estupidez a nossa desperdiçar a imensa área das marquises do novo Maracanã – quase 29 mil metros quadrados – que poderiam abrigar um vistoso conjunto de placas fotovoltaicas capazes de gerar energia elétrica para até 3.000 domicílios. O custo varia de dez a vinte milhões de reais, dependendo da tecnologia empregada. Alguém poderá dizer: “É caro demais! Não vale a pena”. Mas será que a forma usual de comprar energia está valendo a pena?

Vivemos num país onde, segundo o IBGE, a tarifa de energia elétrica subiu mais do que o dobro da inflação oficial nos últimos 15 anos. A opção pelo solar – embora mais cara – oferece como vantagem a amortização do investimento em alguns poucos anos.

Alguém poderá dizer que a nova marquise – mais leve – poderia não suportar as tradicionais placas fotovoltaicas. Pois que se pensasse numa estrutura compatível. O que está em jogo é a possibilidade de tornar o estádio útil mesmo em dias que não aconteçam partidas de futebol. O Maracanã poderia ser uma usina de energia – ainda que com potência modesta – que além do benefício direto de gerar eletricidade, funcionaria também como elemento indutor de mais pesquisas e investimentos em energia solar no Brasil.

E quem disse que o custo de instalação de um projeto como esse só seria possível com recursos públicos? Se houvesse vontade política para promover inovação tecnológica no setor energético usando o novo Maracanã como garoto-propaganda, seria perfeitamente possível sondar o interesse de grandes empresas com know-how em energia solar que aceitassem instalar os equipamentos fotovoltaicos a custo zero, sem ônus para o governo. E o que essa empresa ganharia em troca? O direito de explorar a imagem do Maracanã como “estádio solar” graças à tecnologia oferecida pela empresa.

Alguém duvida que a imagem aérea do estádio tanto na Copa de 2014 quanto nas Olimpíadas de 2016 alcançará bilhões de telespectadores pelo mundo? É mídia espontânea, super-exposição positiva de imagem, e tudo aquilo que um bom negociador não levaria mais do que alguns minutos para convencer o investidor a botar a mão no bolso e bancar a ideia.

Com recursos públicos ou privados, o certo era fazer. Não basta instalar alguns coletores solares para aquecer a água do banho usadas pelos atletas nos vestiários. É pouco. Se os responsáveis pelo projeto do Maracanã marcaram um gol contra desprezando o sol, os estádios de Pituaçu, em Salvador, e Mineirão, em Belo Horizonte, terão a energia solar como aliada para a produção de energia elétrica. Acorda Rio! Maracanã sem energia solar é como o Rio sem praia. Infelizmente os cariocas continuarão usando o sol apenas para se bronzear.Símbolo da sustentabilidade por suas belezas naturais e por sediar grande conferências ambientais da ONU, o Rio de Janeiro continua com um Maracanã aquém do que merece.