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The 500 Phases of Matter: New System Successfully Classifies Symmetry-Protected Phases (Science Daily)

Dec. 21, 2012 — Forget solid, liquid, and gas: there are in fact more than 500 phases of matter. In a major paper in a recent issue of Science, Perimeter Faculty member Xiao-Gang Wen reveals a modern reclassification of all of them.

Artist’s impression of a string-net of light and electrons. String-nets are a theoretical kind of topologically ordered matter. (Credit: Xiao-Gang Wen/ Perimeter Institute)

Condensed matter physics — the branch of physics responsible for discovering and describing most of these phases — has traditionally classified phases by the way their fundamental building blocks — usually atoms — are arranged. The key is something called symmetry.

To understand symmetry, imagine flying through liquid water in an impossibly tiny ship: the atoms would swirl randomly around you and every direction — whether up, down, or sideways — would be the same. The technical term for this is “symmetry” — and liquids are highly symmetric. Crystal ice, another phase of water, is less symmetric. If you flew through ice in the same way, you would see the straight rows of crystalline structures passing as regularly as the girders of an unfinished skyscraper. Certain angles would give you different views. Certain paths would be blocked, others wide open. Ice has many symmetries — every “floor” and every “room” would look the same, for instance — but physicists would say that the high symmetry of liquid water is broken.

Classifying the phases of matter by describing their symmetries and where and how those symmetries break is known as the Landau paradigm. More than simply a way of arranging the phases of matter into a chart, Landau’s theory is a powerful tool which both guides scientists in discovering new phases of matter and helps them grapple with the behaviours of the known phases. Physicists were so pleased with Landau’s theory that for a long time they believed that all phases of matter could be described by symmetries. That’s why it was such an eye-opening experience when they discovered a handful of phases that Landau couldn’t describe.

Beginning in the 1980s, condensed matter researchers, including Xiao-Gang Wen — now a faculty member at Perimeter Institute — investigated new quantum systems where numerous ground states existed with the same symmetry. Wen pointed out that those new states contain a new kind of order: topological order. Topological order is a quantum mechanical phenomenon: it is not related to the symmetry of the ground state, but instead to the global properties of the ground state’s wave function. Therefore, it transcends the Landau paradigm, which is based on classical physics concepts.

Topological order is a more general understanding of quantum phases and the transitions between them. In the new framework, the phases of matter were described not by the patterns of symmetry in the ground state, but by the patterns of a decidedly quantum property — entanglement. When two particles are entangled, certain measurements performed on one of them immediately affect the other, no matter how far apart the particles are. The patterns of such quantum effects, unlike the patterns of the atomic positions, could not be described by their symmetries. If you were to describe a city as a topologically ordered state from the cockpit of your impossibly tiny ship, you’d no longer be describing the girders and buildings of the crystals you passed, but rather invisible connections between them — rather like describing a city based on the information flow in its telephone system.

This more general description of matter developed by Wen and collaborators was powerful — but there were still a few phases that didn’t fit. Specifically, there were a set of short-range entangled phases that did not break the symmetry, the so-called symmetry-protected topological phases. Examples of symmetry-protected phases include some topological superconductors and topological insulators, which are of widespread immediate interest because they show promise for use in the coming first generation of quantum electronics.

In the paper featured in Science, Wen and collaborators reveal a new system which can, at last, successfully classify these symmetry-protected phases.

Using modern mathematics — specifically group cohomology theory and group super-cohomology theory — the researchers have constructed and classified the symmetry-protected phases in any number of dimensions and for any symmetries. Their new classification system will provide insight about these quantum phases of matter, which may in turn increase our ability to design states of matter for use in superconductors or quantum computers.

This paper is a revealing look at the intricate and fascinating world of quantum entanglement, and an important step toward a modern reclassification of all phases of matter.

Journal Reference:

  1. X. Chen, Z.-C. Gu, Z.-X. Liu, X.-G. Wen. Symmetry-Protected Topological Orders in Interacting Bosonic SystemsScience, 2012; 338 (6114): 1604 DOI:10.1126/science.1227224

Don’t Blame Autism for Newtown (New York Times)

By PRISCILLA GILMAN – Published: December 17, 2012

LAST Wednesday night I listened to Andrew Solomon, the author of the extraordinary new book “Far From the Tree,” talk about the frequency of filicide in families affected by autism. Two days later, I watched the news media attempt to explain a matricide and a horrific mass murder in terms of the killer’s supposed autism.

It began as insinuation, but quickly flowered into outright declaration. Words used to describe the killer, Adam Lanza, began with “odd,” “aloof” and “a loner,” shaded into “lacked empathy,” and finally slipped into “on the autism spectrum” and suffering from “a mental illness like Asperger’s.” By Sunday, it had snowballed into a veritable storm of accusation and stigmatization.

Whether reporters were directly attributing Mr. Lanza’s shooting rampage to his autism or merely shoddily lumping together very different conditions, the false and harmful messages were abundant.

Let me clear up a few misconceptions. For one thing, Asperger’s and autism are not forms of mental illness; they are neurodevelopmental disorders or disabilities. Autism is a lifelong condition that manifests before the age of 3; most mental illnesses do not appear until the teen or young adult years. Medications rarely work to curb the symptoms of autism, but they can be indispensable in treating mental illness like obsessive-compulsive disorder, schizophrenia and bipolar disorder.

Underlying much of this misreporting is the pernicious and outdated stereotype that people with autism lack empathy. Children with autism may have trouble understanding the motivations and nonverbal cues of others, be socially naïve and have difficulty expressing their emotions in words, but they are typically more truthful and less manipulative than neurotypical children and are often people of great integrity. They can also have a strong desire to connect with others and they can be intensely empathetic — they just attempt those connections and express that empathy in unconventional ways. My child with autism, in fact, is the most empathetic and honorable of my three wonderful children.

Additionally, a psychopathic, sociopathic or homicidal tendency must be separated out from both autism and from mental illness more generally. While autistic children can sometimes be aggressive, this is usually because of their frustration at being unable to express themselves verbally, or their extreme sensory sensitivities. Moreover, the form their aggression takes is typically harmful only to themselves. In the very rare cases where their aggression is externally directed, it does not take the form of systematic, meticulously planned, intentional acts of violence against a community.

And if study after study has definitively established that a person with autism is no more likely to be violent or engage in criminal behavior than a neurotypical person, it is just as clear that autistic people are far more likely to be the victims of bullying and emotional and physical abuse by parents and caregivers than other children. So there is a sad irony in making autism the agent or the cause rather than regarding it as the target of violence.

In the wake of coverage like this, I worry, in line with concerns raised by the author Susan Cain in her groundbreaking book on introverts, “Quiet”: will shy, socially inhibited students be looked at with increasing suspicion as potentially dangerous? Will a quiet, reserved, thoughtful child be pegged as having antisocial personality disorder? Will children with autism or mental illness be shunned even more than they already are?

This country needs to develop a better understanding of the complexities of various conditions and respect for the profound individuality of its children. We need to emphasize that being introverted doesn’t mean one has a developmental disorder, that a developmental disorder is not the same thing as a mental illness, and that most mental illnesses do not increase a person’s tendency toward outward-directed violence.

We should encourage greater compassion for all parents facing an extreme challenge, whether they have children with autism or mental illness or have lost their children to acts of horrific violence (and that includes the parents of killers).

Consider this, posted on Facebook yesterday by a friend of mine from high school who has an 8-year-old, nonverbal child with severe autism:

“Today Timmy was having a first class melt down in Barnes and Nobles and he rarely melts down like this. He was throwing his boots, rolling on the floor, screaming and sobbing. Everyone was staring as I tried to pick him up and [his brother Xander] scrambled to pick up his boots. I was worried people were looking at him and wondering if he would be a killer when he grows up because people on the news keep saying this Adam Lanza might have some spectrum diagnosis … My son is the kindest soul you could ever meet. Yesterday, a stranger looked at Timmy and said he could see in my son’s eyes and smile that he was a kind soul; I am thankful that he saw that.”

Rather than averting his eyes or staring, this stranger took the time to look, to notice and to share his appreciation of a child’s soul with his mother. The quality of that attention is what needs to be cultivated more generally in this country.

It could take the form of our taking the time to look at, learn about and celebrate each of the tiny victims of this terrible shooting. It could manifest itself in attempts to dismantle harmful, obfuscating stereotypes or to clarify and hone our understanding of each distinct condition, while remembering that no category can ever explain an individual. Let’s try to look in the eyes of every child we encounter, treat, teach or parent, whatever their diagnosis or label, and recognize each child’s uniqueness, each child’s inimitable soul.

Priscilla Gilman is the author of “The Anti-Romantic Child: A Memoir of Unexpected Joy.”

The Decline of the ‘Great Equalizer’ (The Atlantic)

DEC 19 2012, 9:15 AM – DAVID ROHDE, KRISTINA COOKE, AND HIMANSHU OJHA

Massachusetts, home to America’s best schools and best-educated workforce, has seen income inequality soar. Why? The poor are losing an academic arms race with the rich.

615 student silhouette.jpg

Reuters

“Education then, beyond all other devices of human origin, is a great equalizer of the conditions of men — the balance wheel of the social machinery.”
Horace Mann, pioneering American educator, 1848

“In America, education is still the great equalizer.”
Arne Duncan, U.S. Secretary of Education, 2011

BOSTON – When Puritan settlers established America’s first public school here in 1635, they planted the seed of a national ideal: that education should serve as the country’s “great equalizer.”

Americans came to believe over time that education could ensure that all children of any class had a shot at success. And if any state should be able to make that belief a reality, it was Massachusetts.

The Bay State is home to America’s oldest school, Boston Latin, and its oldest college, Harvard. It was the first state to appoint an education secretary, Horace Mann, who penned the “equalizer” motto in 1848. Today, Massachusetts has the country’s greatest concentration of elite private colleges, and its students place first in nationwide Department of Education rankings.

Yet over the past 20 years, America’s best-educated state also has experienced the country’s second-biggest increase in income inequality, according to a Reuters analysis of U.S. Census data. As the gap between rich and poor widens in the world’s richest nation, America’s best-educated state is among those leading the way.

Between 1989 and 2011, the average income of the state’s top fifth of households jumped 17 percent. The middle fifth’s income dropped 2 percent, and the bottom fifth’s fell 9 percent. Massachusetts now has one of the widest chasms between rich and poor in America: It is the seventh-most unequal of the 50 states, according to a Reuters ranking of income inequality. Two decades ago, it placed 23rd.

If the great equalizer’s ability to equalize America is dwindling, it’s not because education is growing less important in the modern economy. Paradoxically, it’s precisely because schooling is now even more important.

Screen Shot 2012-12-19 at 9.10.22 AM.png

One force behind rising inequality, in both America and other advanced economies, is well-known. The decline of manufacturing and the replacement of clerks and secretaries with software mean there are fewer high-paying jobs for low-skilled workers.

The good jobs that do exist increasingly require higher education: Since the recession started in the U.S. in 2007, the number of jobs needing a college degree has risen by 2.2 million, according to a recent Georgetown University study. The number of jobs for mere high-school graduates fell by 5.8 million.

FALLING BEHIND THE RICHJust to stay even, poorer Americans need to obtain better credentials. But that points to another rich-poor divide in the United States. Educators call it the scholastic “achievement gap.” It has been around forever, but it’s getting wider. Lower-class children are getting better educations than before. But richer kids are outpacing their gains, which in turn is stoking the widening income gap.

Across the country, a Stanford University study found last year, the achievement gap between rich and poor students on standardized tests is 30 to 40 percent wider than it was a quarter-century ago. Because excellent students are more likely to grow rich, the authors argued, income inequality risks becoming more entrenched.

“Now, we’re in a situation where we need to educate everyone at the level of the elite in the past,” said Paul Reville, Massachusetts secretary of education. “We don’t have a system to do that.”

It’s an academic arms race, and it can be seen in the sharply contrasting fortunes of Weston, a booming Boston suburb, and the blue-collar community of Gardner, where a 20-foot-tall chair sits on Elm Street as a monument to the town’s past as a furniture-manufacturing hub.

The percentage of Gardner children bound for four-year colleges has held steady at about half in the past decade, and median incomes have tumbled as furniture makers headed south or overseas. Gardner High School graduate Curtis Dorval dropped out of the University of Massachusetts this year after his father, a Walmart worker, ran short of money. He’s working at a Walmart now, too, and then heading off to the military.

In Weston, hedge-fund managers are tearing down modest homes to build mansions. Per-capita incomes have leaped 161 percent in the past two decades, and the high school is sending 96 percent of its graduates to universities.

Tanner Skenderian, president of the class of 2012, is now at Harvard; in her graduation speech, she told her classmates to “reach for the moon.”

VICIOUS CYCLE

This correlation between educational attainment and financial fortune is clear statewide. In the bottom fifth of Massachusetts households, the average income dropped 9 percent in the past 20 years to $12,000. They fared worse despite a sizable gain in educational attainment: The share of people 25 and older in the group with a bachelor’s degree rose to 18.5 percent from 11 percent.

The same thing happened to the middle fifth. Their average income slipped 2 percent to $63,000. The share of adults with a bachelor’s rose to 43 percent from 29 percent.

But the top fifth saw their average income leap 17 percent, to $217,000, as their education levels soared far higher. Three-quarters had a bachelor’s, up from half. Fully 50 percent had a post-graduate degree, up from a quarter.

GRAPHIC: Degrees of inequity: Bay State households at all levels of income are getting better educations. But only the richest are seeing income rise.

Some Massachusetts officials say they fear a vicious cycle is taking hold, in which income inequality and educational inequality feed off each other. Democrats and Republicans agree that the increased disparity is a threat to economic mobility in the state. But as in much of the rest of the United States, they disagree over what to do about it. Democrats argue the solution is more – and earlier – schooling. Republicans believe traditional public schools are part of the problem.

The education gap is just one factor behind growing inequality. The U.S. economy has been so weak that large numbers of graduates are underemployed: In 2010, according to Andy Sum, director of the Center for Labor Market Studies at Northeastern University in Boston, only 59 percent of Massachusetts adults with a bachelor’s degree were in jobs that actually required one.

Long-term changes in marriage patterns matter, too, because they are stoking the educational-attainment gap that in turn feeds the income chasm.

People are increasingly more likely to marry their educational equal, Sum’s research finds, creating well-paid two-income couples at the top. At the bottom fifth, the number of single-parent families has risen 15 percent since 1990. Those parents have lower incomes and less time to devote to their children’s schooling. In a pattern echoed nationwide, 70 percent of Massachusetts families with children in the bottom fifth are headed by a single parent – compared with 7 percent in the top fifth.

“All the evidence shows that children born to two highly educated, high-income people tend to obtain the highest level of academic achievement,” said Sum. “At the bottom, where the mom is not that well-educated and tends to have lower income, children tend to do worse.”

EDUCATED BUT MEDIOCRE

A brainier workforce alone isn’t sufficient to drive growth, though. Even as education levels in the Bay State have risen lately, faster growth hasn’t followed. Between 2000 and 2010, Sum found, Massachusetts ranked just 37th in job creation. In fact, none of the 10 states with the top students placed in the top 10 on payroll growth.

“The best educated states were overwhelmingly mediocre in job creation,” he wrote in a study last year. He urges states to complement education with such steps as tax credits, infrastructure spending and on-the-job training.

Seventy miles northwest of Boston, Gardner once touted itself as the “chair-making capital of the world.” The factories employed thousands of workers who supported large families on single incomes. The first workplace time-recorder was invented here, too; as a result of its adoption, “punching the clock” became part of the vernacular.

Today, the factories have gone south or closed. Gardner still calls itself the furniture capital of New England but because of its outlet stores, not its factories. The biggest employers are a hospital and a community college. Retail jobs at Walmart and other chains have replaced better-paying factory work. Between 1989 and 2009, the town’s per capita income slipped 19 percent to $18,000.

A town of some 20,000 people, Gardner has roughly twice the population of wealthy Weston, but spends just 60 percent as much on education. The town’s high school has had six principals in the past eight years.

Even kids who excel at Gardner High School increasingly face financial hurdles after they graduate, say teachers and students. Mayor Mark Hawke said cost routinely prices high-achieving students out of elite private colleges. “It happens every day,” he said.

David Dorval, 47, was laid off in 2009 after working at an area hospital registering patients for 16 years. Dorval, who has an associate’s degree, struggled to find work, and he and his wife divorced. Today he takes home $1,000 a month at Walmart in Gardner and pays half of his earnings to his ex-wife in child support. He goes to his 79-year-old mother’s house for lunch each day.

“I don’t feel like I am able to do what my parents were able to do,” he said. “My parents were able to support eight kids.”

PRICED OUT

His son, Curtis Dorval, works at Walmart as well. When he was a senior at Gardner High School, Curtis was class president. He was accepted by Northeastern University, a private school in Boston.

But Northeastern cost $50,000 a year, which Curtis, then 17, felt he couldn’t afford. Instead, he enrolled last year at the state-run University of Massachusetts Amherst, studying mechanical engineering. With the help of a scholarship for graduating in the top quarter of his class, Curtis paid $10,200 a year.

He got some help from his father, who had saved up $10,000 in stocks and bonds from his days in the hospital job. This summer, that money ran out and Curtis left UMass to enlist in the Air Force. He will serve as an airman – and hopes to use military benefits to pay for parttime university classes.

“The main reason was I needed a way to pay for college,” he said.

David Dorval quickly used up his savings for Curtis's education. New England's excellent colleges are America's priciest - some 25 percent above the U.S. average. REUTERS/Brian Snyder

David Dorval quickly used up his savings for Curtis’s education. New England’s excellent colleges are America’s priciest – some 25 percent above the U.S. average. (Brian Snyder/Reuters)

That is the flip side of New England’s excellent universities: They are the most expensive in the country, according to a study by the College Board. A four-year education at a public or private university costs nearly one-fourth more than the national average.

Sticker shock is forcing those who do stay in college to pass up elite private schools for cheaper state ones. That’s also happening in the middle-class town of Leominster, a former plastics-manufacturing center 15 miles east of Gardner.

Among last year’s top students was Eric Marcoux, co-leader of the robotics team and member of the National Honor Society. He was accepted to Worcester Polytechnic Institute, a top private engineering university. WPI offered him a $20,000 annual scholarship – but he and his family still faced taking on roughly $30,000 a year in debt. Marcoux chose the University of Massachusetts Lowell, where he’ll have to borrow only half as much.

“It was a lot of going back and forth,” said Marcoux, whose dream is to work for Google. “It was a hard decision but I think it was the right one.”

Trading down can carry a stiff cost: A Harvard study published this year found that students who go to Massachusetts state colleges are less likely to graduate than those who attend Massachusetts private colleges.

The state has tried to help poorer kids. In the early 1990s, Massachusetts sharply increased state funding of local elementary and secondary schools and mandated comprehensive testing. The overhaul was designed to improve student performance and eradicate the achievement gap.

THE SAT GAP

Twenty years later, Massachusetts spends $4.8 billion a year on its public schools, up 83 percent from 1990. Children from lower income families have improved their scores on tests, but their results still lag, as a look at results from the Scholastic Aptitude Tests makes clear.

In the state’s five wealthiest school districts, students had average scores ranging from 594 to 621 on the 800-point college-admissions test in 2009-2010. In the five poorest districts for which data are available, the SAT scores averaged from 403 to 469.

Reville, the education secretary, wants a redoubled push on childhood education: The 1990s reforms were good but didn’t go far enough. “There is no way for someone who is poorly educated to be self-sufficient,” he said. “It’s in our national interest to do something that we should have done morally anyway.”

What he proposes is sweeping change.

Income depends on educational achievement, and the single best predictor of a child’s likelihood of academic success remains in turn the socio-economic status of his or her mother, said Reville. The solution to erasing the achievement gap involves, in essence, providing low-income students with the advantages their wealthier peers enjoy: pre-school at the age of three, tutors, summer camps, and after-school activities like sports and music lessons. Schools could contract with outside organizations to provide those activities, or lengthen their school day or school year by one-third.

Asked how much such an initiative might cost, Reville responded, “How much would it cost to give every child an upper-middle-class life?”

Such talk makes Massachusetts Republicans blanch. They say they care about income disparities that harm people’s ability to move up the income ladder. Americans are now less likely to move to a higher economic class in their lifetime than Western Europeans or Canadians, according to a number of recent studies.

Republicans argue that the problem is not resources in the public schools: Massachusetts already ranks No. 8 in the amount of money states spend per student, according to the Census Bureau.

CHOICE AND CHARTERS

“What Reville is suggesting is wraparound social services,” said Jim Stergios, executive director of the Pioneer Institute, a conservative think tank in Boston. “We think decentralized decision-making in the schools makes more sense.”

Instead of spending more, Stergios said, give parents greater choice over which schools their children attend. Expand the use of charter schools, financed by the public but managed independently. Make cities strictly follow the course of study set out by the state. Increase the accountability of teachers by linking pay to student test scores.

“We haven’t closed the (achievement) gap because the Massachusetts curriculum isn’t being taught rigorously enough in the urban areas, principals don’t have enough power and independence, and there’s a cap on charter schools,” said Stergios. “That’s why we haven’t seen the great equalizer working as it should.”

Adding to the complexity of addressing the income and educational gaps is a widening geographical divide in the state.

In Massachusetts, some 230,000 people were unemployed in October, Conference Board data show, and roughly 140,000 unfilled jobs were advertised online. Skilled professions, including software engineers and web developers, topped the list. Nearly seven out of 10 vacancies were in the Boston area.

Harvard economist Ed Glaeser calls this the new reality of a knowledge-based global economy. More than ever, innovation, growth and opportunity are clustered in large cities such as Boston. Let decaying factory towns become ghost towns. Instead of building better transportation links, Glaeser believes their inhabitants should be encouraged to move to the closest economic hub.

“In 1940, you wanted to be in an area with resources for your mill,” he said. “In 2012, you want to be in a cluster of smart people.”

CLASS CLUSTERS

Weston, where Glaeser himself lives, is such a cluster. But it isn’t for everyone. Its house prices and real estate taxes put it out of reach for most Massachusetts residents, which points up a conundrum.

As those who can afford to do so head for the clusters, inequality grows. Across the state, communities are becoming more homogenous by income group, said Ben Forman, research director at think tank MassInc.

“There are definitely more Westons now than there were a couple of decades ago,” Forman said. “What the research shows is that more economic segregation leads to high-income children performing better and better and lower-income children falling behind.”

The Boston suburbs where Weston is located are home to the most-educated workforce in the nation’s best-educated state, according to the Boston Federal Reserve.

A Reuters analysis of Census and American Community Survey data found that two-thirds of working-age adults in Weston and surrounding towns had at least a bachelor’s degree in 2010. That’s more than double the national average of 28 percent. Just 23 percent of their peers in Gardner and its neighbors had a bachelor’s or better. As earnings fell in Gardner they soared in Weston. In 1990, Weston residents made 3.5 times more than Gardnerites. By 2009, it was 12 to 1.

On a summer Tuesday afternoon, a man was reading a copy of “Horseback Riding for Dummies” outside Bruegger’s Bagels, the sole fast-food chain that Weston has allowed to open as it tries, with mixed success, to preserve its historic character.

One hedge-fund manager built a 22-room mansion with a basketball court, pool and 10-car garage. Another tore down two homes to build a private equestrian center for his wife and daughter with an indoor riding ring.

WESTON’S ADVANTAGES

Town leaders say they are struggling to keep the town from becoming even wealthier. “We have three selectmen who are trying to find ways to diversify our population with affordable housing,” said Michael Harrity, chairman of the board of selectmen. “It’s difficult when lots are selling for $700,000 for teardowns.”

One area where development is warmly welcome is education. This fall, the town opened a new $13 million science wing for Weston High School that includes nine state-of-the art labs and a multimedia conference center.

Weston High is one of the finest public schools in the country. In 2011, 96 percent of its graduates planned to go on to four-year degree programs. In Gardner, only about half did. Nationally, a 2011 University of Michigan study found that the gap in college-completion rates between rich and poor students has grown by about half since the late 1980s.

Those differentials have a long-term impact. An American with a bachelor’s degree earns on average about $1 million more over a lifetime than one with just some college, according to recent studies.

Another advantage Weston kids have is their involved and demanding parents.

Gardner High has no parent-teacher organization. In Weston, parents raised $300,000 last year for additional after-school activities in the public schools. Top scientists living in Weston help with school science fairs. Parental involvement is so intense that three parents sit on the interview panel for every prospective new teacher. Stay-at-home Weston mothers attend meetings of student-body leaders and help students organize events. They’re known as “Grade Moms”.

‘VERY FORTUNATE’
At Harvard Yard. A study ranked Massachusetts No. 1 in education, No. 37 in job creation. REUTERS/Brian SnyderAt Harvard Yard. A study ranked Massachusetts No. 1 in education, No. 37 in job creation. (Brian Snyder/Reuters)

Liz Hochberger, a recent president of the Weston Parent-Teacher Organization, said the town’s excellent public schools had become a “self-fulfilling prophecy.” Professors from Harvard and the Massachusetts Institute of Technology, along with the wealthy, move to Weston for its public schools, which further improves test scores and college acceptance rates. “Whenever someone is moving to this area and they research the schools,” Hochberger said, “this is always on the list.”

Tanner Skenderian, president of this year’s Weston High graduating class, joked in a speech about her town’s hyper-competitive students. “Welcome to Weston, where third graders take AP Physics, middle-school students sleep for 42 minutes a night, and the most competitive race run by the 2012 boys state champion track team was the race to get the cookies in the cafeteria,” she said.

Competition in high school was fierce. In one advanced placement physics class, she said, six of the 12 students were the children of professors at MIT, America’s premier science university.

But Tanner thrived there. She also found school to be a source of support after her father died while she was in middle school. This fall, she headed to Harvard, after spending the summer interning at the governor’s office. Given the job market, she said she may apply to business or law school after graduating.

Weston, in short, gave her an education that raises her odds of joining her mother – who owns a marketing and event-planning company – at the top of America’s economic ladder.

“We’re very fortunate that we’re rather affluent,” she said. “We have more opportunities, more technology, more classes and more teachers.”

_____

Edited by Michael Williams and Janet Roberts. See more at our Income Inequality homepage.

With Mental Health Issues Rising On Campuses, New Student Initiative to Maintain Balanced Mental Health Is Emerging (Science Daily)

Dec. 18, 2012 — Rates of serious mental illness among university students are drastically rising, and universities are struggling with how to respond to students who show symptoms. Traumatic situations such as academics, financial problems, family problems, intimate and other relationship issues, and career related issues are leaving students overwhelmed, exhausted, sad, lonely, hopeless and depressed.

Volume 60, Issue 1, 2012 of the Journal of American College Health includes publication of the first ever feasibility study on Psychiatric Advance Directives (PADs) for college students. PADs allow students who are living with serious mental illnesses to plan ahead with a support person, creating and documenting an intervention strategy to be used in the event of a psychiatric crisis.

The study entitled “University Students’ Views on the Utility of Psychiatric Advance Directives” was conducted by Anna M. Scheyett, PhD and Adrienne Rooks, MSW. The researchers found that students perceived PADs as beneficial.

“With a PAD, university students could give permission for the university to communicate with relevant support people, identify warning signs of relapse, describe effective interventions and give advance permission for administration of specific medications,” wrote Scheyett and Rooks. “By providing this novel intervention, we may be able to ensure that university students not only get the care they need during crises but also reduce crises through early and effective action and treatment.”

Access free articles from the issue: http://www.tandfonline.com/toc/vach20/60/7

Journal Reference:

  1. Reginald Fennell. Should College Campuses Become Tobacco Free Without an Enforcement Plan? Journal of American College Health, 2012; 60 (7): 491 DOI:10.1080/07448481.2012.716981

Unesco lança campanha para ampliar cooperação pela água em 2013 (Envolverde)

20/12/2012 – 11h02

por Redação do EcoD

campanha Unesco lança campanha para ampliar cooperação pela água em 2013

A campanha é destinada ao dia e ao ano internacional da água. Foto: Divulgação

A Organização das Nações Unidas para a Educação, a Ciência e a Cultura (Unesco) lançou na terça-feira, 18 de dezembro, a campanha Ano Internacional da Cooperação pela Água 2013, destinada ao Dia (22 de março) e ao Ano Internacional da Água. A iniciativa pretende alcançar cinco objetivos:

1. Conscientizar sobre a importância, os benefícios e os desafios da cooperação em questões relacionadas à água;
2. Gerar conhecimento e construir capacidades em prol da cooperação pela água;
3. Provocar ações concretas e inovadoras em prol da cooperação pela água;
4. Fomentar parcerias, diálogo e cooperação pela água como prioridades máximas, mesmo após 2013;
5. Fortalecer a cooperação internacional pela água para abrir caminho para os Objetivos de Desenvolvimento Sustentável defendidos por toda a comunidade que trata sobre água e atendendo às necessidades de todas as sociedades.

Segundo a organização, a humanidade não pode prosperar sem a cooperação no manejo da água, e o desenvolvimento da assistência pelos recursos hídricos envolve uma abordagem que reúne fatores e disciplinas culturais, educacionais e científicas e deve cobrir diversas dimensões: religiosa, ética, social, política, legal, institucional e econômica.

A cooperação pela água assume muitas formas, desde a parceria por meio de fronteiras para o manejo de aquíferos subterrâneos e bacias fluviais compartilhadas, até o intercâmbio de dados científicos, à parceria em uma vila rural para a construção de um poço ou para o fornecimento de água potável através de redes urbanas.

O Ano Internacional de Cooperação pela Água, em 2013, deseja encorajar partes interessadas nos níveis internacional, regional, nacional e local a agir em prol do acesso aos recursos hídricos.

– Conheça a campanha –

* Publicado originalmente no site EcoD.

Are Bacteria Making You Hungry? (Science Daily)

Dec. 19, 2012 — Over the last half decade, it has become increasingly clear that the normal gastrointestinal (GI) bacteria play a variety of very important roles in the biology of human and animals. Now Vic Norris of the University of Rouen, France, and coauthors propose yet another role for GI bacteria: that they exert some control over their hosts’ appetites. Their review was published online ahead of print in the Journal of Bacteriology.

Are bacteria making you hungry? Over the last half decade, it has become increasingly clear that the normal gastrointestinal (GI) bacteria play a variety of very important roles in the biology of human and animals. (Credit: © fabiomax / Fotolia)

This hypothesis is based in large part on observations of the number of roles bacteria are already known to play in host biology, as well as their relationship to the host system. “Bacteria both recognize and synthesize neuroendocrine hormones,” Norris et al. write. “This has led to the hypothesis that microbes within the gut comprise a community that forms a microbial organ interfacing with the mammalian nervous system that innervates the gastrointestinal tract.” (That nervous system innervating the GI tract is called the “enteric nervous system.” It contains roughly half a billion neurons, compared with 85 billion neurons in the central nervous system.)

“The gut microbiota respond both to both the nutrients consumed by their hosts and to the state of their hosts as signaled by various hormones,” write Norris et al. That communication presumably goes both ways: they also generate compounds that are used for signaling within the human system, “including neurotransmitters such as GABA, amino acids such as tyrosine and tryptophan — which can be converted into the mood-determining molecules, dopamine and serotonin” — and much else, says Norris.

Furthermore, it is becoming increasingly clear that gut bacteria may play a role in diseases such as cancer, metabolic syndrome, and thyroid disease, through their influence on host signaling pathways. They may even influence mood disorders, according to recent, pioneering studies, via actions on dopamine and peptides involved in appetite. The gut bacterium,Campilobacter jejuni, has been implicated in the induction of anxiety in mice, says Norris.

But do the gut flora in fact use their abilities to influence choice of food? The investigators propose a variety of experiments that could help answer this question, including epidemiological studies, and “experiments correlating the presence of particular bacterial metabolites with images of the activity of regions of the brain associated with appetite and pleasure.”

Journal Reference:

  1. V. Norris, F. Molina, A. T. Gewirtz. Hypothesis: bacteria control host appetitesJournal of Bacteriology, 2012; DOI:10.1128/JB.01384-12

Will we ever have cyborg brains? (IO9)

Will we ever have cyborg brains?

DEC 19, 2012 2:40 PM

By George Dvorsky

Over at BBC Future, computer scientist Martin Angler has put together a provocative piece about humanity’s collision course with cybernetic technologies. Today, says Angler, we’re using neural interface devices and other assistive technologies to help the disabled. But in short order we’ll be able to radically enhance human capacites — prompting him to wonder about the extent to which we might cyborgize our brains.

Angler points to two a recent and equally remarkable breakthroughs, including a paralyzed stroke victim who was able to guide a robot arm that delivered a hot drink, and a thought-controlled prosthetic hand that could grasp a variety of objects.

Admitting that it’s still early days, Angler speculates about the future:

Yet it’s still a far cry from the visions of man fused with machine, or cyborgs, that grace computer games or sci-fi. The dream is to create the type of brain augmentations we see in fiction that provide cyborgs with advantages or superhuman powers. But the ones being made in the lab only aim to restore lost functionality – whether it’s brain implants that restore limb control, or cochlear implants for hearing.

Creating implants that improve cognitive capabilities, such as an enhanced vision “gadget” that can be taken from a shelf and plugged into our brain, or implants that can restore or enhance brain function is understandably a much tougher task. But some research groups are being to make some inroads.

For instance, neuroscientists Matti Mintz from Tel Aviv University and Paul Verschure from Universitat Pompeu Fabra in Barcelona, Spain, are trying to develop an implantable chip that can restore lost movement through the ability to learn new motor functions, rather than regaining limb control. Verschure’s team has developed a mathematical model that mimics the flow of signals in the cerebellum, the region of the brain that plays an important role in movement control. The researchers programmed this model onto a circuit and connected it with electrodes to a rat’s brain. If they tried to teach the rat a conditioned motor reflex – to blink its eye when it sensed an air puff – while its cerebellum was “switched off” by being anaesthetised, it couldn’t respond. But when the team switched the chip on, this recorded the signal from the air puff, processed it, and sent electrical impulses to the rat’s motor neurons. The rat blinked, and the effect lasted even after it woke up.

Be sure to read the entire article, as Angler discusses uplifted monkeys, the tricky line that divides a human brain from a cybernetic one, and the all-important question of access.

Image: BBC/Science Photo Library.

Human hands evolved for punching (Discovery News)

Analysis by Jennifer Viegas

Wed Dec 19, 2012 06:16 PM ET

Fist

Credit: iStockPhoto

Human hands evolved so that men could make fists and fight, and not just for manual dexterity, new research finds.

The study, published in the Journal of Experimental Biology, adds to a growing body of evidence that humans are among the most aggressive and violent animals on the planet.

“With the notable exception of bonobos, great apes are a relatively aggressive group of mammals,” lead author David Carrier told Discovery News. “Although some primatologists may argue that chimpanzees are the most aggressive apes, I think the evidence suggests that humans are substantially more violent.”

Carrier points out that while chimpanzees physically batter each other more frequently than humans, rape appears to be less common in chimpanzees, and torture and group-against-group forms of violence, such as slavery, are not documented in the animals.

“Chimpanzees are also known to engage in raiding welfare in which one group largely eliminates a neighboring group, but this is not comparable in scope to the genocide that has characterized human history,” added Carrier, a University of Utah biology professor.

For this latest study, he and co-author Michael Morgan, a medical student, conducted three experiments. First, they analyzed what happened when men, aged from 22 to 50, hit a punching bag as hard as they could. The peak stress delivered to the bag — the force per area — was 1.7 to 3 times greater with a fist strike compared with a slap.

“Because you have higher pressure when hitting with a fist, you are more likely to cause injury to tissue, bones, teeth, eyes and the jaw,” Carrier said.

The second and third experiments determined that buttressing provided by the human fist increases the stiffness of the knuckle joint fourfold. It also doubles the ability of the fingers to transmit punching force, mainly due to the force transferred from the fingers to the thumb when the fist is clenched.

In terms of the size and shape of hand anatomy, the scientists point out that humans could have evolved manual dexterity with longer thumbs, but without the fingers and palms getting shorter.

Gorilla hands are closer in proportion to human hands than are other apes’ hands, but they and no other ape — aside from us — hits with a clenched fist.

The researchers additionally point out that humans use fists during threat displays. There is also a difference in body size between males and females, particularly evident with hands and arms. This, Carrier said, is “consistent with the hand being a weapon.”

Human males tend to be more physically violent than women, with men being ten times more likely to commit homicide than females in the U.S., Carrier said. But the research, nonetheless, applies to women as well.

“The bottom line is that women need to fight and defend themselves too,” Morgan told Discovery News. “Women need to fight off attackers and defend themselves from rape.”

Defending children may even help to explain human hand anatomy, since both men and women are often driven to protect their offspring, in addition to fighting with others over territory, resources and for other reasons.

“It can be argued that modern man exists in a world devoid of the evolutionary and selective pressures to which aggression was a beneficial trait,” Morgan said. “Our aggressive behavior remains, but no longer serves an evolutionary purpose.”

Água marginalizada: O reflexo da sociedade (Envolverde)

9/12/2012 – 10h35

por Sarah Bueno Motter e Giovani de Oliveira, da EcoAgência

Diluvio Água marginalizada: O reflexo da sociedade

O Dilúvio é o maior riacho que corta a cidade de Porto Alegre. Foto: Divulgação/Internet

As margens são um limite. Até onde o Dilúvio vai, até onde ele pode ir. Balizado pelo concreto humano, o arroio que corta a capital faz parte da rotina da cidade. Em suas margens, estão os congestionamentos e a ansiedade de Porto Alegre. Nas suas beiradas, está, na hora do rush, o stress de querer chegar rápido ao outro lado da cidade e não conseguir a velocidade pretendida. A poluição que corre dentro do Dilúvio também passa nos seus limiares, os quais são contaminados pela exaustão da sociedade perante sua rotina.

As margens do Dilúvio transbordam o vazio de nossa civilização que corre apressada sem nem saber o motivo. Que deixa à sua margem aqueles que não têm o capital e as oportunidades iguais, aqueles que não têm o carro, aqueles que não têm a casa. Esses ficam às margens.

As bordas também refletem as novas tendências. O desejo da ciclovia, do transporte limpo. Elas falam de um novo caminho que a cidade “quer” abrir. Um caminho para o sustentável.

Mas a sustentabilidade não caminha junto da miséria e da desigualdade e ela não é parceira do descaso. A sustentabilidade não está nas aparências. Ela não é balizada por frágeis mudanças sem conteúdo maciço, sem a pretensão de uma metamorfose. Ela não parte do nada e não chega a lugar nenhum. Ela não se inaugura com uma quadra de ciclovia, ela é uma estrada inteira.

A água, quando cai no Dilúvio, faz o barulho característico dos riachos, aquele som que muitas vezes queremos levar para casa, comprando uma fonte de decoração. O barulho é tão bonito e característico, mas o concreto afasta a cidade da natureza, que suja de nossos resíduos, continua seu caminho. As margens do Dilúvio são uma síntese do que somos. Os carros, os excluídos, a sujeira, os “novos caminhos” e a natureza que teima e vive entre o cinza da ambição humana.

O Dilúvio é o símbolo de uma sociedade precária, individualista e agressiva. Como muitas das crianças que moram embaixo de suas pontes, suas águas são agredidas desde o começo de sua vida. Já em sua nascente, na Lomba do Sabão, o arroio é violentado pela ocupação irregular da área. Famílias, sem condições de moradia, ocupam um local protegido por lei, e jogam seus dejetos nas águas do Dilúvio. Pessoas violentadas pela sociedade do ter, sem espaço para tentar ser, violentam também o arroio e invadem seu espaço.

Espaço que cada vez existe menos. Espaço cada vez mais ocupado pelo lixo, espaço que nós não temos mais. O espaço que poderia ser de lazer, de contato com a natureza em meio à cidade, torna-se um espaço do qual fugimos. Não a toa, algumas pessoas defendem que se cubra o Dilúvio. Defendem uma grande tampa de concreto, que não cure a ferida, mas nos impeça de ver ou sentir.

Mas incrivelmente, violentado do começo ao fim, o Dilúvio segue vivo, suas águas, são a moradia de peixes, pescados por improváveis gaivotas porto-alegrenses. E suas margens, costeadas pelo cinza, ainda conservam um verde, que insiste em se manter vivo.

* Publicado originalmente no site EcoAgência.

Bullying by Childhood Peers Leaves a Trace That Can Change the Expression of a Gene Linked to Mood (Science Daily)

Dec. 18, 2012 — A recent study by a researcher at the Centre for Studies on Human Stress (CSHS) at the Hôpital Louis-H. Lafontaine and professor at the Université de Montréal suggests that bullying by peers changes the structure surrounding a gene involved in regulating mood, making victims more vulnerable to mental health problems as they age.

The study published in the journal Psychological Medicine seeks to better understand the mechanisms that explain how difficult experiences disrupt our response to stressful situations. “Many people think that our genes are immutable; however this study suggests that environment, even the social environment, can affect their functioning. This is particularly the case for victimization experiences in childhood, which change not only our stress response but also the functioning of genes involved in mood regulation,” says Isabelle Ouellet-Morin, lead author of the study.

A previous study by Ouellet-Morin, conducted at the Institute of Psychiatry in London (UK), showed that bullied children secrete less cortisol — the stress hormone — but had more problems with social interaction and aggressive behaviour. The present study indicates that the reduction of cortisol, which occurs around the age of 12, is preceded two years earlier by a change in the structure surrounding a gene (SERT) that regulates serotonin, a neurotransmitter involved in mood regulation and depression.

To achieve these results, 28 pairs of identical twins with a mean age of 10 years were analyzed separately according to their experiences of bullying by peers: one twin had been bullied at school while the other had not. “Since they were identical twins living in the same conditions, changes in the chemical structure surrounding the gene cannot be explained by genetics or family environment. Our results suggest that victimization experiences are the source of these changes,” says Ouellet-Morin. According to the author, it would now be worthwhile to evaluate the possibility of reversing these psychological effects, in particular, through interventions at school and support for victims.

Journal Reference:

  1. I. Ouellet-Morin, C. C. Y. Wong, A. Danese, C. M. Pariante, A. S. Papadopoulos, J. Mill, L. Arseneault. Increased serotonin transporter gene (SERT) DNA methylation is associated with bullying victimization and blunted cortisol response to stress in childhood: a longitudinal study of discordant monozygotic twinsPsychological Medicine, 2012; DOI: 10.1017/S0033291712002784

Manejo comunitário da água (Terramérica)

Ambiente
17/12/2012 – 10h24 – por Emilio Godoy*

am221 TERRAMÉRICA   Manejo comunitário da água

O manejo da água é fundamental para o abastecimento das comunidades rurais. Na imagem um manancial no Estado de Chiapas, sul do México. Foto: Emilio Godoy/IPS

Os serviços comunitários de água, que atendem cerca de 2.500 localidades rurais do México, são uma realidade que reclama reconhecimento legal.

Cidade do México, México, 17 de dezembro de 2012 (Terramérica).- Os sistemas comunitários de abastecimento de água, que funcionam em milhares de localidades do México, querem que uma nova estrutura legal federal em estudo os reconheça como gestores do precioso recurso. “Estamos em um limbo jurídico, porque a lei não nos reconhece, e, ao mesmo tempo, exige que peçamos concessões e façamos investimentos”, disse ao Terramérica um integrante do Sistema de Água Potável de Tecámac, Ricardo Ovando.

Esta entidade sem fins lucrativos e autônoma funciona desde a década de 1950 e foi legalizada em 1997; administra seis poços e abastece cerca de quatro mil usuários em Tecámac, município de 365 mil habitantes no Estado do México, 40 quilômetros ao norte da capital federal. O Sistema de Água Potável de Tecámac já conhece as perseguições, pois em 2005 o governo municipal tomou suas instalações, que foram recuperadas graças a um amparo legal em 2007.

Há 2.517 órgãos operadores de água deste tipo, que atendem a 2.454 cabeceiras municipais sob a forma de sistemas autônomos ou de juntas ou comitês rurais, estima o não governamental Grupo de Estudos Ambientais. O restante das quase 198 mil localidades rurais mexicanas são abastecidas por sistemas estaduais ou municipais, ou por concessionárias. Mas neste país de quase 117 milhões de habitantes, 30% das moradias não têm água encanada e outros 15% a recebem a cada três dias por outros meios, segundo estatísticas oficiais.

A Lei de Águas Nacionais, de 1992, não reconhece juridicamente os sistemas comunitários que, no entanto, funcionam graças aos conselhos de bacia, figura criada para a interação entre a governamental Comissão Nacional da Água e delegados dos usuários e de autoridades federais, estaduais e municipais. “As comunidades cuidam dos recursos naturais e devem decidir o que fazer com eles”, disse ao Terramérica Esteban Solano, morador na localidade de San Pedro Atlapulco, no município de Ocoyoacac, Estado do México, uma zona pródiga em riqueza florestal e hídrica.

Essa população se abastece de três dos quatro mananciais que brotam das montanhas e que também permitem bombear 22 mil metros cúbicos de água por dia para a Cidade do México. Em compensação, o governo da capital entregou cerca de US$ 4 milhões desde 2006. A Constituição mexicana já reconhece o acesso à água como um direito humano básico, estabelecido em 2010 pela Organização das Nações Unidas (ONU), que lhe deu natureza vinculante. Contudo, o Congresso nacional deve aprovar uma nova lei para incorporar essa mudança e tem prazo até fevereiro para fazer isso.

O novo governo, que tomou posse no dia 1º deste mês, prepara seu projeto, do qual poucos detalhes são conhecidos. Entretanto, o presidente Enrique Peña Nieto anunciou durante sua campanha eleitoral um pacote de 38 medidas para garantir o abastecimento universal, incluindo construção de represas, aquedutos e estações de tratamento, além da criação do Ministério da Água.

Além disso, o novo governo deve apresentar nos próximos meses um Programa Nacional Hídrico até 2018. É necessário revisar de maneira “crítica e sistemática as concessões, atribuições e permissões que garantam a participação das comunidades locais e dos afetados”, disse ao Terramérica o presidente da Academia Mexicana de Direito Ambiental, Rolando Cañas.

Por seu lado, as comunidades que administram seus recursos hídricos e outras organizações não governamentais preparam uma proposta para a futura lei de águas. Entre outros elementos, propõe reconhecer os sistemas de autogestão, a cogestão comunitária-municipal, a criação de programas locais de água potável e saneamento, os acordos entre vários municípios, e a supervisão comunitária do projeto, construção, operação e manutenção das estações de tratamento de esgoto.

“A lei deve estar baseada em uma perspectiva de direitos humanos. Vamos em direção a um modelo muito ambicioso, temos que garantir um bem público. E precisamos pensar além da gestão de bacias, porque cada usuário defende seu uso da água”, disse ao Terramérica a pesquisadora Raquel Gutiérrez Nájera, da Universidade de Guadalajara, no Estado de Jalisco.

A água é abundante do centro para o sul do território mexicano, mas escasseia na região norte, que sofreu este ano uma intensa seca, fenômeno que será mais frequente devido à mudança climática, segundo os cientistas. Blindar a administração hídrica comunitária é um passo para frear a privatização que ameaça o futuro marco legal, afirmam alguns.

“Há uma intenção de privatização. Um exemplo é a construção de casas, na qual os desenvolvedores recebem poços para manejar, mas a água está acabando”, disse Ovando, em cuja região operam oito sistemas de gestão autônomos e os usuários pagam pelo serviço quase US$ 4 a cada dois meses. “As florestas são as fábricas de água. Nós cuidamos delas, é justo que nos recompensem”, opinou Solano. Envolverde/Terramérica

* O autor é correspondente da IPS.

LINKS

Mesoamérica ignora sua pegada hídrica

Agro mexicano necessita de uma revolução hídrica

Sem água ao Sul do Rio Bravo

México enfrenta um severo problema líquido, em espanhol

Água comunitária passa pelos tribunais, em espanhol

Onda privatizadora se foi, desafios ficam, em espanhol

Lei de Águas Nacionais, pdf em espanhol

Grupo de Estudos Ambientais, em espanhol

Academia Mexicana de Direito Ambiental no Facebook, em espanhol

Artigo produzido para o Terramérica, projeto de comunicação dos Programas das Nações Unidas para o Meio Ambiente (Pnuma) e para o Desenvolvimento (Pnud), realizado pela Inter Press Service (IPS) e distribuído pela Agência Envolverde.

Renee Lertzman: the difficulty of knowledge

By Renee Lertzman / December 16, 2012

The notion that one can feel deeply, passionately about a particular issue – and not do anything in practically about it – seems to have flummoxed the broader environmental community.

Why else would we continue to design surveys and polls gauging public opinions about climate change (or other serious ecological threats)? Such surveys – even high profile, well funded mass surveys – continue to reproduce pernicious myths regarding both human subjectivity and the so-called gaps between values and actions.

It is no surprise that data surfacing in a survey or poll will stand in stark contrast to the ‘down and dirty’ world of actions. We all know that surveys invoke all sorts of complicated things like wanting to sound smart/good/moral, one’s own self-concept vs. actual feelings or thoughts, and being corralled into highly simplistic renderings of what are hugely complex topics or issues (“do you worry about climate change/support carbon tax/drive to work each day etc?”). So there is the obvious limitation right now. However, more important is this idea that the thoughts or ideas people hold will translate into their daily life. Reflect for a moment on an issue you care very deeply about. Now consider how much in alignment your practices are, in relation with this issue. It takes seconds to see that in fact, we can have multiple and competing desires and commitments, quite easily.

So why is it so hard for us to carry this over into how we research environmental values, perceptions or beliefs?

If we accept from the get-go that we are complicated beings living in hugely complicated contexts, woven into networks extending far beyond our immediate grasp, it makes a lot of sense that I can care deeply for my children’s future quality of life (and climatic conditions), and still carry on business as usual. I may experience deep conflict, guilt, shame and pain, which I can shove to the edges of consciousness. I may manage to not even think about these issues, or create nifty rationalizations for my consumptive behaviors.

However, this does not mean I don’t care, have deep concern, and even profound anxieties.

Until we realize this basic fact – that we are multiple selves in social contexts, and dynamic and fluid – our communications work will be limited. Why? Because we continue to speak with audiences, design messaging, and carry out research with the mythical unitary self in mind. We try to trick, cajole, seduce people into caring about our ecological treasures. This is simply the wrong track. Rather than trick, why not invite? Rather than overcome ‘barriers,’ why not presume dilemmas, and set out to understand them?

There is also the fact that some knowledge is just too difficult to bear.

The concept of “difficult knowledge” relates to the fact that when we learn, we also let go of cherished beliefs or concepts, and this can be often quite painful. How we handle knowledge, in other words, can and should be done with this recognition. How can we best support one another to bear difficult knowledge?

One of the tricks of the trade for gifted psychotherapists is the ability to listen and converse. The therapist listens; not only for the meaning, but where there may be resistance. The places that make us squirm or laugh nervously or change the topic. This is regarded as where the riches lie – where we may find ourselves stuck despite our best intentions. If we were to practice a bit of this in our own work in environmental communications, my guess is we’d see less rah-rah cheerleading engagement styles, and more ‘let’s be real and get down to business’ sort of work.

And this is what we need, desperately.

Emerging Ethical Dilemmas in Science and Technology (Science Daily)

Dec. 17, 2012 — As a new year approaches, the University of Notre Dame’s John J. Reilly Center for Science, Technology and Values has announced its inaugural list of emerging ethical dilemmas and policy issues in science and technology for 2013.

The Reilly Center explores conceptual, ethical and policy issues where science and technology intersect with society from different disciplinary perspectives. Its goal is to promote the advancement of science and technology for the common good.

The center generated its inaugural list with the help of Reilly fellows, other Notre Dame experts and friends of the center.

The center aimed to present a list of items for scientists and laypeople alike to consider in the coming months and years as new technologies develop. It will feature one of these issues on its website each month in 2013, giving readers more information, questions to ask and resources to consult.

The ethical dilemmas and policy issues are:

Personalized genetic tests/personalized medicine

Within the last 10 years, the creation of fast, low-cost genetic sequencing has given the public direct access to genome sequencing and analysis, with little or no guidance from physicians or genetic counselors on how to process the information. What are the potential privacy issues, and how do we protect this very personal and private information? Are we headed toward a new era of therapeutic intervention to increase quality of life, or a new era of eugenics?

Hacking into medical devices

Implanted medical devices, such as pacemakers, are susceptible to hackers. Barnaby Jack, of security vendor IOActive, recently demonstrated the vulnerability of a pacemaker by breaching the security of the wireless device from his laptop and reprogramming it to deliver an 830-volt shock. How do we make sure these devices are secure?

Driverless Zipcars

In three states — Nevada, Florida, and California — it is now legal for Google to operate its driverless cars. Google’s goal is to create a fully automated vehicle that is safer and more effective than a human-operated vehicle, and the company plans to marry this idea with the concept of the Zipcar. The ethics of automation and equality of access for people of different income levels are just a taste of the difficult ethical, legal and policy questions that will need to be addressed.

3-D printing

Scientists are attempting to use 3-D printing to create everything from architectural models to human organs, but we could be looking at a future in which we can print personalized pharmaceuticals or home-printed guns and explosives. For now, 3-D printing is largely the realm of artists and designers, but we can easily envision a future in which 3-D printers are affordable and patterns abound for products both benign and malicious, and that cut out the manufacturing sector completely.

Adaptation to climate change

The differential susceptibility of people around the world to climate change warrants an ethical discussion. We need to identify effective and safe ways to help people deal with the effects of climate change, as well as learn to manage and manipulate wild species and nature in order to preserve biodiversity. Some of these adaptation strategies might be highly technical (e.g. building sea walls to stem off sea level rise), but others are social and cultural (e.g., changing agricultural practices).

Low-quality and counterfeit pharmaceuticals

Until recently, detecting low-quality and counterfeit pharmaceuticals required access to complex testing equipment, often unavailable in developing countries where these problems abound. The enormous amount of trade in pharmaceutical intermediaries and active ingredients raise a number of issues, from the technical (improvement in manufacturing practices and analytical capabilities) to the ethical and legal (for example, India ruled in favor of manufacturing life-saving drugs, even if it violates U.S. patent law).

Autonomous systems

Machines (both for peaceful purposes and for war fighting) are increasingly evolving from human-controlled, to automated, to autonomous, with the ability to act on their own without human input. As these systems operate without human control and are designed to function and make decisions on their own, the ethical, legal, social and policy implications have grown exponentially. Who is responsible for the actions undertaken by autonomous systems? If robotic technology can potentially reduce the number of human fatalities, is it the responsibility of scientists to design these systems?

Human-animal hybrids (chimeras)

So far scientists have kept human-animal hybrids on the cellular level. According to some, even more modest experiments involving animal embryos and human stem cells violate human dignity and blur the line between species. Is interspecies research the next frontier in understanding humanity and curing disease, or a slippery slope, rife with ethical dilemmas, toward creating new species?

Ensuring access to wireless and spectrum

Mobile wireless connectivity is having a profound effect on society in both developed and developing countries. These technologies are completely transforming how we communicate, conduct business, learn, form relationships, navigate and entertain ourselves. At the same time, government agencies increasingly rely on the radio spectrum for their critical missions. This confluence of wireless technology developments and societal needs presents numerous challenges and opportunities for making the most effective use of the radio spectrum. We now need to have a policy conversation about how to make the most effective use of the precious radio spectrum, and to close the digital access divide for underserved (rural, low-income, developing areas) populations.

Data collection and privacy

How often do we consider the massive amounts of data we give to commercial entities when we use social media, store discount cards or order goods via the Internet? Now that microprocessors and permanent memory are inexpensive technology, we need think about the kinds of information that should be collected and retained. Should we create a diabetic insulin implant that could notify your doctor or insurance company when you make poor diet choices, and should that decision make you ineligible for certain types of medical treatment? Should cars be equipped to monitor speed and other measures of good driving, and should this data be subpoenaed by authorities following a crash? These issues require appropriate policy discussions in order to bridge the gap between data collection and meaningful outcomes.

Human enhancements

Pharmaceutical, surgical, mechanical and neurological enhancements are already available for therapeutic purposes. But these same enhancements can be used to magnify human biological function beyond the societal norm. Where do we draw the line between therapy and enhancement? How do we justify enhancing human bodies when so many individuals still lack access to basic therapeutic medicine?

Should Physicians Prescribe Cognitive Enhancers to Healthy Individuals? (Science Daily)

Dec. 17, 2012 — Physicians should not prescribe cognitive enhancers to healthy individuals, states a report being published today in the Canadian Medical Association Journal (CMAJ)Dr. Eric Racine and his research team at the IRCM, the study’s authors, provide their recommendation based on the professional integrity of physicians, the drugs’ uncertain benefits and harms, and limited health care resources.

Prescription stimulants and other neuropharmaceuticals, generally prescribed to treat attention deficit disorder (ADD), are often used by healthy people to enhance concentration, memory, alertness and mood, a phenomenon described as cognitive enhancement.

“Individuals take prescription stimulants to perform better in school or at work,” says Dr. Racine, a Montréal neuroethics specialist and Director of the Neuroethics research unit at the IRCM. “However, because these drugs are available in Canada by prescription only, people must request them from their doctors. Physicians are thus important stakeholders in this debate, given the risks and regulations of prescription drugs and the potential for requests from patients for such cognitive enhancers.”

The prevalence of cognitive enhancers used by students on university campuses ranges from 1 per cent to 11 per cent. Taking such stimulants is associated with risks of dependence, cardiovascular problems, and psychosis.

“Current evidence has not shown that the desired benefits of enhanced mental performance are achieved with these substances,” explainsCynthia Forlini, first author of the study and doctoral student in Dr. Racine’s research unit. “With uncertain benefits and clear harms, it is difficult to support the notion that physicians should prescribe a medication to a healthy individual for enhancement purposes.”

“Physicians in Canada provide prescriptions through a publicly-funded health care system with expanding demands for care,” adds Ms. Forlini. “Prescribing cognitive enhancers may therefore not be an appropriate use of resources. The concern is that those who need the medication for health reasons but cannot afford it will be at a disadvantage.”

“An international bioethics discussion has surfaced on the ethics of cognitive enhancement and the role of physicians in prescribing stimulants to healthy people,” concludes Dr. Racine. “We hope that our analysis prompts reflection in the Canadian medical community about these cognitive enhancers.”

Éric Racine’s research is funded through a New Investigator Award from the Canadian Institutes for Health Research (CIHR). The report’s co-author is Dr. Serge Gauthier from the McGill Centre for Studies in Aging.

Journal Reference:

  1. Cynthia Forlini, Serge Gauthier, and Eric Racine. Should physicians prescribe cognitive enhancers to healthy individuals? Canadian Medical Association Journal, 2012; DOI: 10.1503/cmaj.121508

Visualizing The Way Americans Value Water (fastcoexist.com)

By Ariel Schwartz (accessed December 17, 2012)

It’s a pretty precious resource, considering that we need it to live. But do we actually care enough to change our behavior to make sure we have it in the future?

The aging water infrastructure in the U.S. is fragile, to say the least; every year, over 1.7 trillion gallons of water are lost due to leaks and breaks in the system. It’s never good to waste water, but that’s a staggeringly unacceptable figure at a time when the country is facing unprecedented droughts. But on a grassroots level, things may be starting to change. Water technology company Xylem’s new Value of Water Index, which examines American attitudes toward water, indicates that the public is finally realizing the magnitude of our water problem–and that everyone might need to pitch in to fix it.

According to the report–culled from a survey of 1,008 voters in the U.S.–79% of Americans realize we have a water scarcity problem. That may seem high, but 86% of respondents also say they have dealt with water shortages and contamination, meaning it takes a lot (or is just impossible) to convince some people. A whopping 88% of respondents think the country’s water structure needs reform.

Americans also think they have some personal responsibility for the crisis–specifically, 31% of respondents think they should have to pay a bit more on water bills for infrastructure improvements. If Americans upped their monthly water bill by just $7.70, we would see an extra $6.4 billion for water infrastructure investments.

In spite of everything, 69% of those polled say they take clean water for granted, and just 29% think problems with our water infrastructure will seriously affect them (remember: the vast majority of respondents have dealt with water shortages and contamination already). Water awareness still has a long way to go–but it will most likely be sped up as water shortages become more common.

Here’s the whole infographic

Sala de aula do futuro (Correio Braziliense)

[O maior problema do artigo: “futuro” aqui tomado como algo não problemático; despolitização da educação]

JC e-mail 4640, de 10 de Dezembro de 2012

Universidade inglesa desenvolve carteiras coletivas com telas sensíveis ao toque para tornar o ensino mais atraente às crianças. Os equipamentos se mostraram capazes de, quando bem utilizados pelo professor, melhorar a habilidade matemática dos alunos.

“Algum de vocês está fazendo 30 mais 31?”, pergunta a pequena Chelsea aos colegas de seu grupo. Prontamente, Adam responde: “Eu estou fazendo todas as de diminuir”. Jack, na outra ponta da mesa, protesta: “Eu também estou fazendo as de diminuir!”. “Então, eu vou fazer as de somar”, conclui a garotinha inglesa. A conversa ocorre em um dos quatro grupos de crianças entre 8 e 10 anos que tentam criar o maior número de expressões matemáticas cujo resultado seja aquele determinado pela professora. Um jogo em que aprendem sem nem perceber que estão estudando. A interação dos estudantes é um exemplo perfeito do que os pedagogos chamam de aprendizado colaborativo. Nesse caso, porém, a discussão matemática teve um catalisador essencial: a tecnologia.

Um grupo de pesquisadores da Escola de Educação da Universidade de Durham, no Reino Unido, desenvolveu e testou, durante três anos, um conjunto de carteiras escolares com telas sensíveis ao toque pensadas especialmente para facilitar o ensino. O invento se mostrou muito eficaz após os experimentos, dos quais participaram aproximadamente 100 crianças. As mesas digitais, grandes o bastante para serem usadas por cerca de quatro alunos, são conectadas em rede a um tablet controlado pelo professor e à lousa no centro da sala de aula, na qual o conteúdo das carteiras pode ser ampliado e discutido em conjunto. Os testes foram feitos com atividades voltadas para o aprendizado de expressões matemáticas. Depois, os resultados foram comparados aos de grupos que realizaram atividade parecida, mas com as ferramentas tradicionais de ensino: giz, lápis e papel.

Ao usar o novo sistema, 45% dos alunos ampliaram seu repertório de expressões numéricas. Na outra turma, esse índice foi de 16%. Ambos os grupos conseguiram aumentar suas habilidades na fluência do aprendizado, no entanto, aqueles em contato com “a sala de aula do futuro” também tiveram benefícios em flexibilidade. Fluência é a capacidade de aplicar procedimentos ou fórmulas a situações cotidianas. É o caso de uma criança que, ao aprender a operação de subtração, usa o conhecimento para calcular o troco em uma compra.

Já a flexibilidade acontece ao aplicar uma gama de soluções para novos problemas, em vez de apenas uma compreensão de como e quando usar os procedimentos aprendidos em sala. “Não queremos que as crianças apenas saibam fazer, mas que sejam reflexivas, capazes de abstração, de pensar o próprio pensamento. Isso é flexibilidade. Ser capaz de transpor a solução para o problema a outros e novos contextos”, esclarece o engenheiro e psicólogo Francisco Antônio Fialho, professor da Universidade Federal de Santa Catarina (UFSC), que não participou do estudo.

Os resultados do experimento inglês, publicados na revista Learning and Instruction, mostram que, ao usar as mesas coletivas, as crianças foram capazes de trabalhar em equipe na busca por novas maneiras de resolver e responder problemas, usando soluções criativas. O estudo coloca em prática o que Fialho chama de arquétipo do mago. Nele, a tecnologia seria a varinha mágica usada pelo aluno capaz de fazer e criar coisas inimagináveis, inclusive, trazer de volta o encanto da educação.

“A tecnologia para a criança é um brinquedo. Ela não gosta de matemática, mas gosta de brincar. Ali, ela está participando de um joguinho com os colegas.” O psicólogo acredita que não basta ensinar a fazer. Hoje, a educação precisa incentivar a inovação de forma colaborativa. “Basta compararmos a produção da ponta de uma lança a um mouse. Sabemos que a ponta da lança foi um artesão quem fez. Já para fabricar o mouse existe um monte de pessoas envolvidas. Tudo que temos hoje surge da troca de ideias.”

Desafio – A principal autora da pesquisa, Emma Mercier, acredita que a tecnologia pode ser usada para apoiar o raciocínio complexo, o pensamento e as interações entre as disciplinas, ao mesmo tempo em que é capaz de aumentar o prazer da atividade no curto prazo. A longo prazo, no entanto, ela considera essencial criar atividades que sejam desafiadoras e envolventes. “Essa geração de crianças está entrando em um mundo em que o uso da tecnologia será normal, precisamos prepará-las para isso. No entanto, é importante que elas se envolvam em atividades de aprendizagem que deem o suporte a uma profunda compreensão das disciplinas, em vez de apenas utilizar um dispositivo tecnológico em particular”, enfatiza Mercier. Para ela, a tecnologia permite aos professores usar um tipo de pedagogia social, que pode apoiar a aprendizagem.

“Essa relação é o sonho de todo mundo: fazer com que a tecnologia esteja em prol da atividade”, acredita Sérgio Abranches, professor do Núcleo de Estudos de Hipertexto e Tecnologias na Educação, da Universidade Federal de Pernambuco (UFPE). “Não pode ser só uma forma de dinamização e motivação que também são elementos importantes. Mas, além do estudo instrumentalizado, queremos que chegue de fato a contribuir com a aprendizagem.”

Tablets no Brasil – A implementação de dispositivos tecnológicos nas salas de aula brasileiras ainda dá os primeiros passos. Uma das mais recentes medidas adotadas pelo governo federal foi a compra de cerca de cinco mil tablets, que deverão chegar às escolas públicas do país no ano que vem. Professores serão treinados para usar os dispositivos em sala de aula e, segundo a pasta, terão à sua disposição cerca de 15 mil aulas, além de obras literárias e livros didáticos em versão digital.

Segundo Sérgio Abranches, professor da UFPE, o tablet é um modo diferente de aplicar a tecnologia, que pode colher resultados interessantes. Mesmo se tratando de um dispositivo individual, Abranches explica que, geralmente, ele é usado coletivamente pelos alunos. Tudo depende da proposta pedagógica feita pelo professor.

“Temos observado que o professor ainda não assimilou a tecnologia digital. Os nativos digitais – como chamamos aqueles que já nasceram em um mundo com a internet – não imaginam o mundo sem ela. Já o professor não tem essa cultura. Às vezes, a vivencia no âmbito pessoal, mas não na prática pedagógica.” Por isso, muitas vezes, os dispositivos acabam usados de forma tímida, como uma ferramenta e não como parte de uma cultura tecnológica. “O primeiro desafio é este: entender pela lógica de quem nasceu com todo esse aparato”, acredita Abranches.

Eight examples of where the IPCC has missed the mark on its predictions and projections (The Daily Climate)

flooded-768

A “king tide” leaves parts of Sausalito, Calif., flooded in 2010. Disagreement over the impact of ice-sheet melting on sea-level rise has led the Intergovernmental Panel on Climate Change to omit their influence – and thus underestimate sea-level rise – in recent reports, a pattern the panel repeats with other key findings. Photo by Yanna B./flickr.

Dec. 6, 2012

Correction appended

By Glenn Scherer
The Daily Climate

Scientists will tell you: There are no perfect computer models. All are incomplete representations of nature, with uncertainty built into them. But one thing is certain: Several fundamental projections found in Intergovernmental Panel on Climate Change reports have consistently underestimated real-world observations, potentially leaving world governments at doubt as to how to guide climate policy.

emissions

Emissions

At the heart of all IPCC projections are “emission scenarios:” low-, mid-, and high-range estimates for future carbon emissions. From these “what if” estimates flow projections for temperature, sea-rise, and more.

Projection: In 2001, the IPCC offered a range of fossil fuel and industrial emissions trends, from a best-case scenario of 7.7 billion tons of carbon released each year by 2010 to a worst-case scenario of 9.7 billion tons.

Reality: In 2010, global emissions from fossil fuels alone totaled 9.1 billion tons of carbon, according to federal government’s Earth Systems Research Laboratory.

Why the miss? While technically within the range, scientists never expected emissions to rise so high so quickly, said IPCC scientist Christopher Fields. The IPCC, for instance, failed to anticipate China’s economic growth, or resistance by the United States and other nations to curbing greenhouse gases.

“We really haven’t explored a world in which the emissions growth rate is as rapid as we have actually seen happen,” Fields said.

Temperature

IPCC models use the emission scenarios discussed above to estimate average global temperature increases by the year 2100.

warming-300

Projection: The IPCC 2007 assessment projected a worst-case temperature rise of 4.3° to 11.5° Fahrenheit, with a high probability of 7.2°F.

Reality: We are currently on track for a rise of between 6.3° and 13.3°F, with a high probability of an increase of 9.4°F by 2100, according to the Massachusetts Institute of Technology. Other modelers are getting similar results, including a study published earlier this month by the Global Carbon Project consortium confirming the likelihood of a 9ºF rise.

Why the miss? IPCC emission scenarios underestimated global CO2 emission rates, which means temperature rates were underestimated too. And it could get worse: IPCC projections haven’t included likely feedbacks such as large-scale melting of Arctic permafrost and subsequent release of large quantities of CO2 and methane, a greenhouse gas 20 times more potent, albeit shorter lived, in the atmosphere than carbon dioxide.

Arctic Meltdown

Five years ago, the summer retreat of Arctic ice wildly outdistanced all 18 IPCC computer models, amazing IPCC scientists. It did so again in 2012.

ice-600

Projection: The IPCC has always confidently projected that the Arctic ice pack was safe at least until 2050 or well beyond 2100.

Reality: Summer ice is thinning faster than every climate projection, and today scientists predict an ice-free Arctic in years, not decades. Last summer, Arctic sea ice extent plummeted to 1.32 million square miles, the lowest level ever recorded – 50 percent below the long-term 1979 to 2000 average.

Why the miss? For scientists, it is increasingly clear that the models are under-predicting the rate of sea ice retreat because they are missing key real-world interactions.

“Sea ice modelers have speculated that the 2007 minimum was an aberration… a matter of random variability, noise in the system, that sea ice would recover.… That no longer looks tenable,” says IPCC scientist Michael Mann. “It is a stunning reminder that uncertainty doesn’t always act in our favor.”

Ice Sheets

Greenland and Antarctica are melting, even though IPCC said in 1995 that they wouldn’t be.

Projection: In 1995, IPCC projected “little change in the extent of the Greenland and Antarctic ice sheets… over the next 50-100 years.” In 2007 IPCC embraced a drastic revision: “New data… show[s] that losses from the ice sheets of Greenland and Antarctica have very likely contributed to sea level rise over 1993 to 2003.”

Today, ice loss in Greenland and Antarctica is trending at least 100 years ahead of projections compared to IPCC’s first three reports.

Reality: Today, ice loss in Greenland and Antarctica is trending at least 100 years ahead of projections compared to IPCC’s first three reports.

Why the miss? “After 2001, we began to realize there were complex dynamics at work – ice cracks, lubrication and sliding of ice sheets,” that were melting ice sheets quicker, said IPCC scientist Kevin Trenberth. New feedbacks unknown to past IPCC authors have also been found. A 2012 study, for example, showed that the reflectivity of Greenland’s ice sheet is decreasing, causing ice to absorb more heat, likely escalating melting.

Sea-Level Rise

The fate of the world’s coastlines has become a classic example of how the IPCC, when confronted with conflicting science, tends to go silent.

Projection: In the 2001 report, the IPCC projected a sea rise of 2 millimeters per year. The worst-case scenario in the 2007 report, which looked mostly at thermal expansion of the oceans as temperatures warmed, called for up to 1.9 feet of sea-level-rise by century’s end.

Today: Observed sea-level-rise has averaged 3.3 millimeters per year since 1990. By 2009, various studies that included ice-melt offered drastically higher projections of between 2.4 and 6.2 feet sea level rise by 2100.

Why the miss? IPCC scientists couldn’t agree on a value for the contribution melting Greenland and Antarctic ice sheets would add to sea-level rise. So they simply left out the data to reach consensus. Science historian Naomi Oreskes calls this – one of IPCC’s biggest underestimates – “consensus by omission.”

Ocean Acidification

To its credit, the IPCC admits to vast climate change unknowns. Ocean acidification is one such impact.

Projection: Unmentioned as a threat in the 1990, 1995 and 2001 IPCC reports. First recognized in 2007, when IPCC projected acidification of between 0.14 and 0.35 pH units by 2100. “While the effects of observed ocean acidification on the marine biosphere are as yet undocumented,” said the report, “the progressive acidification of oceans is expected to have negative impacts on marine shell-forming organisms (e.g. corals) and their dependent species.”

Reality: The world’s oceans absorb about a quarter of the carbon dioxide humans release annually into the atmosphere. Since the start of the Industrial Revolution, the pH of surface ocean waters has fallen by 0.1 pH units. Since the pH scale is logarithmic, this change represents a stunning 30 percent increase in acidity.

Why the miss? Scientists didn’t have the data. They began studying acidification by the late 1990s, but there weren’t many papers on the topic until mid-2000, missing the submission deadline for IPCC’s 2001 report. Especially alarming are new findings that ocean temperatures and currents are causing parts of the seas to become acidic far faster than expected, threatening oysters and other shellfish.

National Oceanic and Atmospheric Administration chief Jane Lubchenco has called acidification the “equally evil twin” to global warming.

Thawing Tundra

Some carbon-cycle feedbacks that could vastly amplify climate change – especially a massive release of carbon and methane from thawing permafrost – are extremely hard to model.

Projection: In 2007, IPCC reported with “high confidence” that “methane emissions from tundra… and permafrost have accelerated in the past two decades, and are likely to accelerate further.” However, the IPCC offered no projections regarding permafrost melt.

Reality: Scientists estimate that the world’s permafrost holds 1.5 trillion tons of frozen carbon. That worries scientists: The Arctic is warming faster than anywhere else on earth, and researchers are seeing soil temperatures climb rapidly, too. Some permafrost degradation is already occurring.

Large-scale tundra wildfires in 2012 added to the concern.

Why the miss? This is controversial science, with some researchers saying the Arctic tundra is stable, others saying it will defrost only over long periods of time, and still more convinced we are on the verge of a tipping point, where the tundra thaws rapidly and catastrophically. A major 2005 study, for instance, warned that the entire top 11 feet of global permafrost could disappear by century’s end, with potentially cataclysmic climate impacts.

The U.N. Environmental Programme revealed this week that IPCC’s fifth assessment, due for release starting in September, 2013, will again “not include the potential effects of the permafrost carbon feedback on global climate.”

Tipping points

The IPCC has been silent on tipping points – non-linear “light switch” moments when the climate system abruptly shifts from one paradigm to another.

The trouble with tipping points is they’re hard to spot until you’ve passed one.

Projection: IPCC has made no projections regarding tipping-point thresholds.

Reality: The scientific jury is still out as to whether we have reached any climate thresholds – a point of no return for, say, an ice-free Arctic, a Greenland meltdown, the slowing of the North Atlantic Ocean circulation, or permanent changes in large-scale weather patterns like the jet stream, El Niño or monsoons. The trouble with tipping points is they’re hard to spot until you’ve passed one.

Why the miss? Blame the computers: These non-linear events are notoriously hard to model. But with scientists recognizing the sizeable threat tipping points represent, they will be including some projections in the 2013-14 assessment.

Correction (Dec. 6, 2012): Earlier editions incorrectly compared global carbon dioxide emissions against carbon emissions scenarios. Carbon dioxide is heavier, incorrectly skewing the comparison. Global use of fossil fuels in 2010 produced about 30 billion tons of carbon dioxide but only 9.1 tons of carbon, putting emissions within the extreme end of IPCC scenarios. The story has been changed to reflect that.

© Glenn Scherer, 2012. All rights reserved.

Graphic of emissions scenario courtesy U.S. Global Change Research Program. Photo of activist warning of 6ºC warming © Adela Nistora. Graphic showing Arctic summer ice projections vs. observations by the Vancouver Observer.

Glenn Scherer is senior editor of Blue Ridge Press, a news service that has been providing environmental commentary and news to U.S. newspapers since 2007.

DailyClimate.org is a foundation-funded news service covering climate change. Contact editor Douglas Fischer at dfischer [at] dailyclimate.org

Scientists Pioneer Method to Predict Environmental Collapse (Science Daily)

Researcher Enlou Zhang takes a core sample from the bed of Lake Erhai in China. (Credit: University of Southampton)

Nov. 19, 2012 — Scientists at the University of Southampton are pioneering a technique to predict when an ecosystem is likely to collapse, which may also have potential for foretelling crises in agriculture, fisheries or even social systems.

The researchers have applied a mathematical model to a real world situation, the environmental collapse of a lake in China, to help prove a theory which suggests an ecosystem ‘flickers’, or fluctuates dramatically between healthy and unhealthy states, shortly before its eventual collapse.

Head of Geography at Southampton, Professor John Dearing explains: “We wanted to prove that this ‘flickering’ occurs just ahead of a dramatic change in a system — be it a social, ecological or climatic one — and that this method could potentially be used to predict future critical changes in other impacted systems in the world around us.”

A team led by Dr Rong Wang extracted core samples from sediment at the bottom of Lake Erhai in Yunnan province, China and charted the levels and variation of fossilised algae (diatoms) over a 125-year period. Analysis of the core sample data showed the algae communities remained relatively stable up until about 30 years before the lake’s collapse into a turbid or polluted state. However, the core samples for these last three decades showed much fluctuation, indicating there had been numerous dramatic changes in the types and concentrations of algae present in the water — evidence of the ‘flickering’ before the lake’s final definitive change of state.

Rong Wang comments: “By using the algae as a measure of the lake’s health, we have shown that its eco-system ‘wobbled’ before making a critical transition — in this instance, to a turbid state.

“Dramatic swings can be seen in other data, suggesting large external impacts on the lake over a long time period — for example, pollution from fertilisers, sewage from fields and changes in water levels — caused the system to switch back and forth rapidly between alternate states. Eventually, the lake’s ecosystem could no longer cope or recover — losing resilience and reaching what is called a ‘tipping point’ and collapsing altogether.”

The researchers hope the method they have trialled in China could be applied to other regions and landscapes.

Co-author Dr Pete Langdon comments: “In this case, we used algae as a marker of how the lake’s ecosystem was holding-up against external impacts — but who’s to say we couldn’t use this method in other ways? For example, perhaps we should look for ‘flickering’ signals in climate data to try and foretell impending crises?”

Journal Reference:

  1. Rong Wang, John A. Dearing, Peter G. Langdon, Enlou Zhang, Xiangdong Yang, Vasilis Dakos, Marten Scheffer.Flickering gives early warning signals of a critical transition to a eutrophic lake stateNature, 2012; DOI:10.1038/nature11655

Social Synchronicity: Research Finds a Connection Between Bonding and Matched Movements (Science Daily)

A new study finds that body-movement synchronization between two participants increases following a short session of cooperative training, suggesting that our ability to synchronize body movements is a measurable indicator of social interaction. (Credit: © Yuri Arcurs / Fotolia)

Dec. 12, 2012 — Humans have a tendency to spontaneously synchronize their movements. For example, the footsteps of two friends walking together may synchronize, although neither individual is consciously aware that it is happening. Similarly, the clapping hands of an audience will naturally fall into synch. Although this type of synchronous body movement has been observed widely, its neurological mechanism and its role in social interactions remain obscure. In a new study, led by cognitive neuroscientists at the California Institute of Technology (Caltech), researchers found that body-movement synchronization between two participants increases following a short session of cooperative training, suggesting that our ability to synchronize body movements is a measurable indicator of social interaction.

“Our findings may provide a powerful tool for identifying the neural underpinnings of both normal social interactions and impaired social interactions, such as the deficits that are often associated with autism,” says Shinsuke Shimojo, Gertrude Baltimore Professor of Experimental Psychology at Caltech and senior author of the study.

Shimojo, along with former postdoctoral scholar Kyongsik Yun, and Katsumi Watanabe, an associate professor at the University of Tokyo, presented their work in a paper published December 11 inScientific Reports, an online and open-access journal from the Nature Publishing Group.

For their study, the team evaluated the hypothesis that synchronous body movement is the basis for more explicit social interaction by measuring the amount of fingertip movement between two participants who were instructed to extend their arms and point their index fingers toward one another — much like the famous scene in E.T. between the alien and Elliott. They were explicitly instructed to keep their own fingers as stationary as possible while keeping their eyes open. The researchers simultaneously recorded the neuronal activity of each participant using electroencephalography, or EEG, recordings. Their finger positions in space were recorded by a motion-capture system.

The participants repeated the task eight times; the first two rounds were called pretraining sessions and the last two were posttraining sessions. The four sessions in between were the cooperative training sessions, in which one person — a randomly chosen leader — made a sequence of large finger movements, and the other participant was instructed to follow the movements. In the posttraining sessions, finger-movement correlation between the two participants was significantly higher compared to that in the pretraining sessions. In addition, socially and sensorimotor-related brain areas were more synchronized between the brains, but not within the brain, in the posttraining sessions. According to the researchers, this experiment, while simple, is novel in that it allows two participants to interact subconsciously while the amount of movement that could potentially disrupt measurement of the neural signal is minimized.

“The most striking outcome of our study is that not only the body-body synchrony but also the brain-brain synchrony between the two participants increased after a short period of social interaction,” says Yun. “This may open new vistas to study the brain-brain interface. It appears that when a cooperative relationship exists, two brains form a loose dynamic system.”

The team says this information may be potentially useful for romantic or business partner selection.

“Because we can quantify implicit social bonding between two people using our experimental paradigm, we may be able to suggest a more socially compatible partnership in order to maximize matchmaking success rates, by preexamining body synchrony and its increase during a short cooperative session” explains Yun.

As part of the study, the team also surveyed the subjects to rank certain social personality traits, which they then compared to individual rates of increased body synchrony. For example, they found that the participants who expressed the most social anxiety showed the smallest increase in synchrony after cooperative training, while those who reported low levels of anxiety had the highest increases in synchrony. The researchers plan to further evaluate the nature of the direct causal relationship between synchronous body movement and social bonding. Further studies may explore whether a more complex social interaction, such as singing together or being teamed up in a group game, increases synchronous body movements among the participants.

“We may also apply our experimental protocol to better understand the nature and the neural correlates of social impairment in disorders where social deficits are a common symptom, as in schizophrenia or autism,” says Shimojo.

The title of the Scientific Reports paper is “Interpersonal body and neural synchronization as a marker of implicit social interaction.” Funding for this research was provided by the Japan Science and Technology Agency’s CREST and the Tamagawa-Caltech gCOE (global Center Of Excellence) programs.

Journal Reference:

  1. Kyongsik Yun, Katsumi Watanabe, Shinsuke Shimojo.Interpersonal body and neural synchronization as a marker of implicit social interactionScientific Reports, 2012; DOI: 10.1038/srep00959

Dead Guts Spill History of Extinct Microbes: Fecal Samples from Archeological Sites Reveal Evolution of Human Gut Microbes (Science Daily)

This shows microbiomes across time and populations. (Credit: Tito RY, Knights D, Metcalf J, Obregon-Tito AJ, Cleeland L, et al. (2012) Insights from Characterizing Extinct Human Gut Microbiomes. PLoS ONE 7(12):e51146.doi:10.1371/journal.pone.0051146)

Dec. 12, 2012 — Extinct microbes in fecal samples from archaeological sites across the world resemble those found in present-day rural African communities more than they resemble the microbes found in the gut of cosmopolitan US adults, according to research published December 12 in the open access journalPLOS ONE by Cecil Lewis and colleagues from the University of Oklahoma.

The researchers analyzed 1400-8000-year-old fecal samples preserved at three archaeological sites: natural mummies from Caserones in northern Chile, and samples from Hinds Cave in the southern US and Rio Zape in northern Mexico. They also used samples from Otzi the Iceman and a soldier frozen on a glacier for nearly a century. They compared the now-extinct microbes in these samples to microbes present in current-day soil and compost, as well as the microbes present in mouths, gut and skin of people in rural African communities and cosmopolitan US adults.

The authors discovered that the extinct human microbes from natural mummies closely resembled compost samples, while one sample from Mexico was found to match that from a rural African child. Overall, the extinct microbial communities were more similar to those from present rural populations than those from cosmopolitan ones. The study concludes, “These results suggest that the modern cosmopolitan lifestyle resulted in a dramatic change to the human gut microbiome.”

As Lewis explains, “It is becoming accepted that modern aseptic and antibiotic practices, are often beneficial but come with a price, such as compromising the natural development of our immune system through changing the relationship we had with microbes ancestrally. What is unclear is what that ancestral state looked like. This paper demonstrates that we can use ancient human biological samples to learn about these ancestral relationships, despite the challenges of subsequent events like degradation and contamination.”

Journal Reference:

  1. Raul Y. Tito, Dan Knights, Jessica Metcalf, Alexandra J. Obregon-Tito, Lauren Cleeland, Fares Najar, Bruce Roe, Karl Reinhard, Kristin Sobolik, Samuel Belknap, Morris Foster, Paul Spicer, Rob Knight, Cecil M. Lewis. Insights from Characterizing Extinct Human Gut Microbiomes.PLoS ONE, 2012; 7 (12): e51146 DOI:10.1371/journal.pone.0051146

Do We Live in a Computer Simulation Run by Our Descendants? Researchers Say Idea Can Be Tested (Science Daily)

The conical (red) surface shows the relationship between energy and momentum in special relativity, a fundamental theory concerning space and time developed by Albert Einstein, and is the expected result if our universe is not a simulation. The flat (blue) surface illustrates the relationship between energy and momentum that would be expected if the universe is a simulation with an underlying cubic lattice. (Credit: Martin Savage)

Dec. 10, 2012 — A decade ago, a British philosopher put forth the notion that the universe we live in might in fact be a computer simulation run by our descendants. While that seems far-fetched, perhaps even incomprehensible, a team of physicists at the University of Washington has come up with a potential test to see if the idea holds water.

The concept that current humanity could possibly be living in a computer simulation comes from a 2003 paper published inPhilosophical Quarterly by Nick Bostrom, a philosophy professor at the University of Oxford. In the paper, he argued that at least one of three possibilities is true:

  • The human species is likely to go extinct before reaching a “posthuman” stage.
  • Any posthuman civilization is very unlikely to run a significant number of simulations of its evolutionary history.
  • We are almost certainly living in a computer simulation.

He also held that “the belief that there is a significant chance that we will one day become posthumans who run ancestor simulations is false, unless we are currently living in a simulation.”

With current limitations and trends in computing, it will be decades before researchers will be able to run even primitive simulations of the universe. But the UW team has suggested tests that can be performed now, or in the near future, that are sensitive to constraints imposed on future simulations by limited resources.

Currently, supercomputers using a technique called lattice quantum chromodynamics and starting from the fundamental physical laws that govern the universe can simulate only a very small portion of the universe, on the scale of one 100-trillionth of a meter, a little larger than the nucleus of an atom, said Martin Savage, a UW physics professor.

Eventually, more powerful simulations will be able to model on the scale of a molecule, then a cell and even a human being. But it will take many generations of growth in computing power to be able to simulate a large enough chunk of the universe to understand the constraints on physical processes that would indicate we are living in a computer model.

However, Savage said, there are signatures of resource constraints in present-day simulations that are likely to exist as well in simulations in the distant future, including the imprint of an underlying lattice if one is used to model the space-time continuum.

The supercomputers performing lattice quantum chromodynamics calculations essentially divide space-time into a four-dimensional grid. That allows researchers to examine what is called the strong force, one of the four fundamental forces of nature and the one that binds subatomic particles called quarks and gluons together into neutrons and protons at the core of atoms.

“If you make the simulations big enough, something like our universe should emerge,” Savage said. Then it would be a matter of looking for a “signature” in our universe that has an analog in the current small-scale simulations.

Savage and colleagues Silas Beane of the University of New Hampshire, who collaborated while at the UW’s Institute for Nuclear Theory, and Zohreh Davoudi, a UW physics graduate student, suggest that the signature could show up as a limitation in the energy of cosmic rays.

In a paper they have posted on arXiv, an online archive for preprints of scientific papers in a number of fields, including physics, they say that the highest-energy cosmic rays would not travel along the edges of the lattice in the model but would travel diagonally, and they would not interact equally in all directions as they otherwise would be expected to do.

“This is the first testable signature of such an idea,” Savage said.

If such a concept turned out to be reality, it would raise other possibilities as well. For example, Davoudi suggests that if our universe is a simulation, then those running it could be running other simulations as well, essentially creating other universes parallel to our own.

“Then the question is, ‘Can you communicate with those other universes if they are running on the same platform?'” she said.

Journal References:

  1. Silas R. Beane, Zohreh Davoudi, Martin J. Savage.Constraints on the Universe as a Numerical SimulationArxiv, 2012 [link]
  2. Nick Bostrom. Are You Living in a Computer Simulation? Philosophical Quarterly, (2003) Vol. 53, No. 211, pp. 243-255 [link]

‘Missing’ Polar Weather Systems Could Impact Climate Predictions (Science Daily)

Intense but small-scale polar storms could make a big difference to climate predictions according to new research. (Credit: NEODAAS / University of Dundee)

Dec. 16, 2012 — Intense but small-scale polar storms could make a big difference to climate predictions, according to new research from the University of East Anglia and the University of Massachusetts.

Difficult-to-forecast polar mesoscale storms occur frequently over the polar seas; however, they are missing in most climate models.

Research published Dec. 16 inNature Geoscience shows that their inclusion could paint a different picture of climate change in years to come.

Polar mesoscale storms are capable of producing hurricane-strength winds which cool the ocean and lead to changes in its circulation.

Prof Ian Renfrew, from UEA’s School of Environmental Sciences, said: “These polar lows are typically under 500 km in diameter and over within 24-36 hours. They’re difficult to predict, but we have shown they play an important role in driving large-scale ocean circulation.

“There are hundreds of them a year in the North Atlantic, and dozens of strong ones. They create a lot of stormy weather, strong winds and snowfall — particularly over Norway, Iceland, and Canada, and occasionally over Britain, such as in 2003 when a massive dump of snow brought the M11 to a standstill for 24 hours.

“We have shown that adding polar storms into computer-generated models of the ocean results in significant changes in ocean circulation — including an increase in heat travelling north in the Atlantic Ocean and more overturning in the Sub-polar seas.

“At present, climate models don’t have a high enough resolution to account for these small-scale polar lows.

“As Arctic Sea ice continues to retreat, polar lows are likely to migrate further north, which could have consequences for the ‘thermohaline’ or northward ocean circulation — potentially leading to it weakening.”

Alan Condron from the University of Massachusetts said: “By simulating polar lows, we find that the area of the ocean that becomes denser and sinks each year increases and causes the amount of heat being transported towards Europe to intensify.

“The fact that climate models are not simulating these storms is a real problem because these models will incorrectly predict how much heat is being moved northward towards the poles. This will make it very difficult to reliably predict how the climate of Europe and North America will change in the near-future.”

Prof Renfrew added: “Climate models are always improving, and there is a trade-off between the resolution of the model, the complexity of the model, and the number of simulations you can carry out. Our work suggests we should put some more effort into resolving such storms.”

‘The impact of polar mesoscale storms on Northeast Atlantic ocean circulation’ by Alan Condron from the University of Massachusetts (US) and Ian Renfrew from UEA (UK), is published in Nature Geoscience on December 16, 2012.

Journal Reference:

  1. Alan Condron, Ian A. Renfrew. The impact of polar mesoscale storms on northeast Atlantic Ocean circulationNature Geoscience, 2012; DOI:10.1038/ngeo1661

Physicist Happens Upon Rain Data Breakthrough (Science Daily)

John Lane looks over data recorded from his laser system as he refines his process and formula to calibrate measurements of raindrops. (Credit: NASA/Jim Grossmann)

Dec. 3, 2012 — A physicist and researcher who set out to develop a formula to protect Apollo sites on the moon from rocket exhaust may have happened upon a way to improve weather forecasting on Earth.

Working in his backyard during rain showers and storms, John Lane, a physicist at NASA’s Kennedy Space Center in Florida, found that the laser and reflector he was developing to track lunar dust also could determine accurately the size of raindrops, something weather radar and other meteorological systems estimate, but don’t measure.

The special quantity measured by the laser system is called the “second moment of the size distribution,” which results in the average cross-section area of raindrops passing through the laser beam.

“It’s not often that you’re studying lunar dust and it ends up producing benefits in weather forecasting,” said Phil Metzger, a physicist who leads the Granular Mechanics and Regolith Operations Lab, part of the Surface Systems Office at Kennedy.

Lane said the additional piece of information would be useful in filling out the complex computer calculations used to determine the current conditions and forecast the weather.

“We may be able to refine (computer weather) models to make them more accurate,” Lane said. “Weather radar data analysis makes assumptions about raindrop size, so I think this could improve the overall drop size distribution estimates.”

The breakthrough came because Metzger and Lane were looking for a way to calibrate a laser sensor to pick up the fine particles of blowing lunar dust and soil. It turns out that rain is a good stand-in for flying lunar soil.

“I was pretty skeptical in the beginning that the numbers would come out anywhere close,” Lane said. “Anytime you do something new, it’s a risk that you’re just wasting your time.”

The genesis of the research was the need to find out how much damage would be done by robotic landers getting too close to the six places on the moon where Apollo astronauts landed, lived and worked.

NASA fears that dust and soil particles thrown up by the rocket exhaust of a lander will scour and perhaps puncture the metal skin of the lunar module descent stages and experiment hardware left behind by the astronauts from 1969 to 1972.

“It’s like sandblasting, if you have something coming down like a rocket engine, and it lifts up this dust, there’s not air, so it just keeps going fast,” Lane said. “Some of the stuff can actually reach escape velocity and go into orbit.”

Such impacts to those materials could ruin their scientific value to researchers on Earth who want to know what happens to human-made materials left on another world for more than 40 years.

“The Apollo sites have value scientifically and from an engineering perspective because they are a record of how these materials on the moon have interacted with the solar system over 40 years,” Metzger said. “They are witness plates to the environment.”

There also are numerous bags of waste from the astronauts laying up there that biologists want to examine simply to see if living organisms can survive on the moon for almost five decades where there is no air and there is a constant bombardment of cosmic radiation.

“If anybody goes back and sprays stuff on the bags or touches the bags, they ruin the experiment,” Metzger said. “It’s not just the scientific and engineering value. They believe the Apollo sites are the most important archaeological sites in the human sphere, more important than the pyramids because it’s the first place humans stepped off the planet. And from a national point of view, these are symbols of our country and we don’t want them to be damaged by wanton ransacking.”

Current thinking anticipates placing a laser sensor on the bottom of one of the landers taking part in the Google X-Prize competition. The sensor should be able to pick up the blowing dust and soil and give researchers a clear set of results so they can formulate restrictions for other landers, such as how far away from the Apollo sites new landers can touch down.

As research continues into the laser sensor, Lane expects the work to continue on the weather forecasting side of the equation, too. Lane already presented some of his findings at a meteorological conference and is working on a research paper to detail the work. “This is one of those topics that span a lot of areas of science,” Lane said.

Water Resources Management and Policy in a Changing World: Where Do We Go from Here? (Science Daily)

Nov. 26, 2012 — Visualize a dusty place where stream beds are sand and lakes are flats of dried mud. Are we on Mars? In fact, we’re on arid parts of Earth, a planet where water covers some 70 percent of the surface.

How long will water be readily available to nourish life here?

Scientists funded by the National Science Foundation’s (NSF) Dynamics of Coupled Natural and Human Systems (CNH) program are finding new answers.

NSF-supported CNH researchers will address water resources management and policy in a changing world at the fall meeting of the American Geophysical Union (AGU), held in San Francisco from Dec. 3-7, 2012.

In the United States, more than 36 states face water shortages. Other parts of the world are faring no better.

What are the causes? Do the reasons lie in climate change, population growth or still other factors?

Among the topics to be covered at AGU are sociohydrology, patterns in coupled human-water resource systems and the resilience of coupled natural and human systems to global change.

Researchers will report, for example, that human population growth in the Andes outweighs climate change as the culprit in the region’s dwindling water supplies. Does the finding apply in other places, and perhaps around the globe?

Scientists presenting results are affiliated with CHANS-Net, an international network of researchers who study coupled natural and human systems.

NSF’s CNH program supports CHANS-Net, with coordination from the Center for Systems Integration and Sustainability at Michigan State University.

CHANS-Net facilitates communication and collaboration among scientists, engineers and educators striving to find sustainable solutions that benefit the environment while enabling people to thrive.

“For more than a decade, NSF’s CNH program has supported projects that explore the complex ways people and natural systems interact with each other,” says Tom Baerwald, NSF CNH program director.

“CHANS-Net and its investigators represent a broad range of projects. They’re developing a new, better understanding of how our planet works. CHANS-Net researchers are finding practical answers for how people can prosper while maintaining environmental quality.”

CNH and CHANS-Net are part of NSF’s Science, Engineering and Education for Sustainability (SEES) investment. NSF’s Directorates for Geosciences; Social, Behavioral and Economic Sciences; and Biological Sciences support the CNH program.

“CHANS-Net has grown to more than 1,000 members who span generations of natural and social scientists from around the world,” says Jianguo “Jack” Liu, principal investigator of CHANS-Net and Rachel Carson Chair in Sustainability at Michigan State University.

“CHANS-Net is very happy to support another 10 CHANS Fellows–outstanding young scientists–to attend AGU, give presentations there, and learn from leaders in CHANS research and build professional networks. We’re looking forward to these exciting annual CHANS-Net events.”

Speakers at AGU sessions organized by CHANS-Net will discuss such subjects as the importance of water conservation in the 21st century; the Gila River and whether its flows might reduce the risk of water shortages in the Colorado River Basin; and historical evolution of the hydrological functioning of the old Lake Xochimilco in the southern Mexico Basin.

Other topics to be addressed include water conflicts in a changing world; system modeling of the Great Salt Lake in Utah to improve the hydro-ecological performance of diked wetlands; and integrating economics into water resources systems analysis.

“Of all our natural resources, water has become the most precious,” wrote Rachel Carson in 1962 in Silent Spring. “By a strange paradox, most of the Earth’s abundant water is not usable for agriculture, industry, or human consumption because of its heavy load of sea salts, and so most of the world’s population is either experiencing or is threatened with critical shortages.”

Fifty years later, more than 100 scientists will present research reflecting Rachel Carson’s conviction that “seldom if ever does nature operate in closed and separate compartments, and she has not done so in distributing Earth’s water supply.”