jeudi 26 mai 2011

2011 What's Worse Than An Oil Spill?

http://query.nytimes.com/gst/fullpage.html?res=9F02EEDD1431F933A15757C0A9679D8B63&partner=rssnyt&emc=rss

OP-ED COLUMNIST; What's Worse Than An Oil Spill?
By MARK BITTMAN
Published: April 20, 2011
A year ago, the Deepwater Horizon drilling rig exploded, gushing nearly five million barrels of oil into the Gulf of Mexico before it was finally capped three months later. It was by most accounts a disaster. But when it comes to wrecking our oceans, the accidental BP spill was small compared with the damage we do with intent and ignorance.
I recently talked about this with two men who specialize in ocean affairs: Carl Safina, the author of ''A Sea In Flames'' and the president of the Blue Ocean Institute; and Ted Danson, (yes, that Ted Danson), who recently published Oceana (the book) and is a board member of Oceana, the conservation organization he helped found. As Safina said, ''Many people believe the whole catastrophe is the oil we spill, but that gets diluted and eventually disarmed over time. In fact, the oil we don't spill, the oil we collect, refine and use, produces CO2 and other gases that don't get diluted.''
That CO2, of course, leads to global warming and climate change, as well as what's called ocean acidification, which might be thought of as oceanic global warming and is a greater catastrophe than any spill to date. The oceans absorb about 30 percent of the carbon dioxide in the atmosphere, creating carbonic acid. Since the start of the industrial revolution we've added about 500 billion metric tons of carbon dioxide to the oceans, which are 30 percent more acidic than they were a couple of hundred years ago.
This acidification makes it difficult for calcifying organisms - coral, snails and oysters and other mollusks, and more - to build shells and skeletons sturdy enough for them to survive. Many of these are on the bottom of the food chain and, as they begin to die off (we've already seen massive oyster declines on the Pacific coast), the effects trickle up. Acidification has already wreaked havoc on coral reefs, on which about 25 percent of all marine life depends. By the end of this century, Safina says, the ocean will begin dissolving coral reefs - unless we make a big change in our fossil-fuel use.
If acidification endangers marine life leisurely, fishing does it quickly. Around 70 percent of global fish stocks are fully or overfished, and 30 percent have collapsed, which means they produce less than 10 percent of their original capacity. Commercial fish catch has declined by 500,000 tons per year since 1988, not for lack of effort, money or technology - in fact because of those factors - but for lack of fish. The danger becomes dual, says Danson: ''If you're overfishing at the top of the food chain, and acidifying the ocean at the bottom, you're creating a squeeze that could conceivably collapse the whole system.''
There's some hope in the overfishing department, and strangely enough the gulf is an example of this. When huge areas were closed to fishing during the spill, many fish stocks rebounded. (As Safina, who is clearly no fan of oil spills, says, ''If you ask the fish whether they'd rather have an oil spill or a season of fishing, I wouldn't be surprised if they'd vote for another blowout.'') We've seen this before: fish stocks boomed during World War II, when the North Atlantic was not a safe place to be. This is why marine reserves - areas where no fishing is allowed - make so much sense.
The U.S. is strong on combating overfishing, in fisheries management, establishing quota or even moritoria on certain species, and in adjusting those subsidies that encourage industrial fishing, that which uses the most damaging methods like bottom trawling and is responsible for horrific amounts of bycatch, the unintentional capture of nontarget fish that is usually left for dead. Ninety percent of the world's fishers - those who fish at subsistence level and just above - catch only 10 percent of the world's fish; industrial and often subsidized ships bring in 90 percent. The World Trade Organization has been slowly moving toward stronger regulation of subsidies for industrial fishing, but very slowly.
The reality is that a tremendous amount needs to change for our oceans and fish stocks to recover. Scary as it has been, the fishing fix seems at least imaginable, if we create more marine sanctuaries, crack down on overfishing and continue to pressure retailers to employ sustainable seafood policies. This last is especially encouraging: Greenpeace's annual report, ''Carting Away the Oceans,'' announced last week that 15 of 20 major U.S. food retailers had passing grades in their fish-selling policies. (This year Safeway took the top spot and is poised to achieve Greenpeace's first ''good'' rating.) When the first report was made, in 2008, none of the stores received positive scores; that's progress.
Yet ocean acidification looms, and for this there is only one solution: reducing carbon emissions. You do that by using less fossil fuel, by conservation or substitution or both. On this front, the U.S. is behind the curve, and we stand to lose a lot more than coral.
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This is a more complete version of the story than the one that appeared in print.

dimanche 15 mai 2011

Contre-Grenelle 3 : Décroissance ou barbarie - 2 avril 2011 - Vaulx-en-Velin



Contre-Grenelle 3 : Décroissance ou barbarie - 2 avril 2011 - Vaulx-en-Velin
Télécharger les vidéos

 
Mot de bienvenue par Bernard Genin, Maire de Vaulx-en-Velin

La barbarie qui vient

 
Paul Ariès (politologue, directeur de publication du Sarkophage)

 
Pour une vraie décroissance - Vincent Cheynet (directeur de publication de La Décroissance)

Face à l’effondrement énergétique

 
Face à l’effondrement énergétique - Aurélien Cohen (doct. anthropologie des techniques)

 
Face à l’effondrement énergétique - Stéphane Lhomme (militant antinucléaire)
(lecture de son texte par Catherine Thumann)

Face à la tyrannie technologique

 
Face à la tyrannie technologique - Cédric Biagini (chercheur militant)

 
Face à la tyrannie technologique - François Jarrige (historien)

Face à l’effondrement environnemental

 
Face à l’effondrement environnemental - Philippe Bihouix (ingénieur)

 
Face à l’effondrement environnemental - Véronique Gallais (Action consommation)

Face à la crise alimentaire

 
Face à la crise alimentaire - Ambroise Mazal (chargé de mission)


 
Face à la crise alimentaire - Raoul Jacquin (paysan)

Face à l’effondrement social

 
Face à l’effondrement social - Geneviève Azam (économiste)

 
Face à l’effondrement social - Bernard Legros (enseignant)

Face à l’effondrement sanitaire

 
Face à l’effondrement sanitaire - Catherine Levraud (médecin)

Face à la capitulation de la gauche

 
Face à la capitulation de la gauche - François Ruffin (journaliste au Monde diplomatique, Fakir)

Face à la capitulation des médias

 
Face à la capitulation des médias - Olivier Poche (journaliste à Acrimed)

Face à l’effondrement culturel

 
Face à l’effondrement culturel - Jean-Luc Coudray (écrivain)

 
Face à l’effondrement culturel - Jean-Claude Besson-Girard (peintre)

Face à l’effondrement psychique

 
Face à l’effondrement psychique - Bertrand Méheust (sociologue)
(lecture de son texte par Philippe Pignarre)

 
Face à l’effondrement psychique - Nicolas Ridoux (ingénieur)

Face au menaces contre la paix civile et les libertés

 
Face au menaces contre la paix civile et les libertés - Philippe Pignarre (éditeur)

 
Face au menaces contre la paix civile et les libertés - Fabrice Flipo (philosophe)

Face à la crise politique

 
Face à la crise politique - Romain Felli (géographe)
(lecture de son texte par Catherine Thumann)

 
Face à la crise politique - Vincent Cheynet

 
Conclusion - Paul Aries

Vidéos réalisées par Marc Chinal

« Le Grenelle de l’environnement a permis de valider le choix collectif en faveur du nucléaire »
Alain Minc, conseiller de Nicolas Sarkozy (France Inter, 23-9-2008)





Organisateur : La Décroissance - Thomas Waring



samedi 7 mai 2011

The truth about talent: Can genius be learned or is it preordained?

The truth about talent: Can genius be learned or is it preordained?
http://www.independent.co.uk/news/education/schools/the-truth-about-talent-can-genius-be-learned-or-is-it-preordained-2279690.html
As children sit their GCSE exams, Matthew Syed argues that we are foolish to believe excellence is only for the few

Friday, 6 May 2011
Pg-12-essay-main_603711t-2011-05-7-22-05.jpg
Excellence through birth or graft? Chess prodigy Nigel Short who, at 19, became the then-youngest ever grand master, faces off with Garry Kasparov

The ideas of Darwin have made an almost total conquest of modern consciousness. The theory of natural selection; the idea that individuals fail or flourish by virtue of inherited characteristics, has been a triumph, commanding the assent of both scientists and laymen alike.

But Darwinism, in a process almost too imperceptible to notice, has shaded into a rather different, but no less dramatic, proposition.
It is the idea that heredity not only explains the variation in such simple traits as height, eye colour and the like, but also the vast differences we see in mathematical, scientific, sporting and musical prowess. It is the view that excellence hinges, in large part, on the right genetic inheritance.
Talent is the word we use to rationalise this idea; the notion that brilliant mathematicians, scientists, sportsmen and musicians are born with excellence encoded in their DNA.
It is an idea that seems to follow naturally from the tenets of Darwin, but is also bolstered by the evidence of our own senses.
When we see a great golfer hitting a 200-yard fade or a maths whizz mentally processing a multi-digit calculation, we infer that they must have been blessed with skills way beyond our own. It boils down to the assertion that excellence is reserved for a select group of individuals; winners in a genetic lottery that passed the rest of us by.
But what if this seductive idea is all wrong? What if our deepest assumptions about success in education and sport – indeed, in life itself – are misconceived? What if talent is not just a meaningless concept, but a corrosive one; robbing ourselves and our children of the incentive to work hard and excel?
This is a particularly pertinent question right now with GCSE exams just weeks away. Could it be that the very idea of talent is holding back our children and damaging performance not just in exams, but in school generally?
Could it be that we need to debunk the talent myth, in order to fulfil our potential and that of our children?
After all, what is talent? We certainly think we know it when we see it. As the director of a violin school put it: "Talent is something a top coach can spot in young musicians that marks them out as destined for greatness."
But how does the director know that this performer, who looks so gifted, hasn't had many hours of special training behind the scenes?
How does he know that the initial differences in ability between this youngster and the rest will persist over years of practice? In fact, he doesn't, as many studies have demonstrated.
A ground-breaking investigation of British musicians, for example, found that the top performers had learnt no faster than those who reached lower levels of attainment. Hour after hour, the various groups improved at almost identical rates. The difference was simply that top performers had practiced for more hours. Further research has shown that when top performers seem to possess an early gift for music, it is often because they have been given extra tuition at home by their parents.
Precisely the same insight is revealed by looking at child prodigies; boys and girls who reach world class levels of performance in their teens. At first sight, they seem to have been blessed with amazing skills; abilities that have enabled them to take a shortcut to eminence. But a closer inspection reveals a very different story.
Tiger Woods, for example, was considered a miracle golfer when he became the youngest-ever winner of the US Masters in 1997.
"The most talented player of all time," was one assessment. But now consider that Woods was given a golf club five days before his first birthday; that by the age of two he had played his first round; that by five he had accumulated more hours of practice than most of us achieve in a lifetime.
Far from being a golfer zapped with special powers that enabled him to circumvent practise, Woods is someone who embodies the rigours of practice.
The same insights apply to mathematical "prodigies".
Rudiger Gamm, a German able to find the quotient of two primes to 60 decimal places, was once described as a "walking miracle" by one science magazine. But now consider that Gamm devotes his life to maths; that he practises for at least four hours every day; that he relentlessly and obsessively learns number facts and procedures.
His excellence is not hardwired – it emerged through practice.
The illusion of talent arises because we only see a tiny proportion of the work that goes into the construction of virtuosity. If we were to examine the incalculable hours of practice; the thousands of baby steps taken by world-class performers to get to the top, the skills would not seem quite so mystical or so inborn. Indeed, extensive research has shown that there is not a top performer in any complex task who has bypassed the 10 years of hard work necessary to reach the top.
So, does this imply that "ordinary" people could perform amazing feats with sufficient practice?
Could those who flunked maths O-Level really compute multi-digit calculations like Gamm?
As long ago as 1896, Alfred Binet – a French psychologist – performed an experiment to find out. He compared two calculating prodigies with two cashiers from a department store in Paris. The cashiers had an average of 14 years' experience in the store, but had showed no early gift for maths.
Binet gave the prodigies and the cashiers identical three- and four-digit multiplication problems and compared the time taken to solve them.
What happened? You guessed it: the best cashier was faster than either prodigy for both problems. In other words, practice, on its own, was sufficient to bring "perfectly normal" people up to and beyond the remarkable speed of prodigies. The conclusion is inescapable. As Professor Brian Butterworth of UCL, the world's foremost expert on mathematical expertise, has put it: "There is no evidence for differences in innate specific capacities for mathematics."
None of this is to deny the notion of heredity or the principles of Darwinism. The evidence shows that some kids start out better than others, whether at maths, English, golf, whatever. But, the key point is that, as the number of hours devoted to practise escalates, so the relevance of these initial differences melts away. Why? Because, over time, and with the right kind of practice, we change so much.
It is not just the body that changes, but the anatomy of the brain. A study of London taxi drivers, for example, discovered that the area of the brain governing spatial navigation is substantially larger than for non-taxi drivers, but it did not start out like this; it developed with time on the job. Similarly, maths prodigies do not just use conventional neural networks when making calculations. They also use a system of the brain implicated in episodic memory (this is the immensely powerful memory used to store autobiographical experiences).
In the ancient world, when our ancestors had little time for anything beyond the minute-to-minute demands of survival, heredity mattered a lot.
Today, where it is not only possible, but often obligatory to devote half a lifetime to a specific but complex area of expertise, heredity matters less and less. Specialisation has been the game changer, but our ideas about success remain in the ancient past.
It is how hard we work and the opportunities we are gifted which determine excellence.
None of this would matter terribly much if the question of talent was merely theoretical. But it is so much more than that. It influences the way we think, feel and engage with our world.
It determines almost everything, from the way we respond to challenges to the way we react to failure.
To see how, consider someone who believes excellence is all about talent (labelled the "fixed mindset"). Why would she bother to work hard?
If she has the right genes, won't she just cruise to the top? And if she lacks talent, well, why bother at all? And who can blame a youngster for this attitude, given the premise?
If, on the other hand, she really believes that effort trumps talent (labelled the "growth mindset"), she will damn well persevere. She will not see failure as an indictment, but as an opportunity to adapt and grow. And, if she is right, she will eventually excel.
What a young person decides about the nature of talent, then, could scarcely be more important.
Think how often you hear people (particularly youngsters) saying: "I lack the brain for numbers," or "I don't have the coordination for sports." These are direct manifestations of the fixed mindset and they destroy motivation. Those with a growth mindset, on the other hand, do not regard their abilities as set in genetic stone. These are the people who approach tasks with gusto. "I may not be good at maths now, but if I work hard, I will be really good in the future!"
So, how do we orient ourselves and our children to the growth mindset?
How do we unlock the power of motivation, particularly with exams around the corner? A few years ago, Carol Dweck, a leading psychologist, took 400 students and gave them a simple puzzle. Afterwards, each of the students were given six words of praise.
Half were praised for intelligence: "Wow, you must be really smart." The other half were praised for effort: "Wow, you must be hard-working." Dweck was seeking to test if these words could make a difference to the student's mindsets. The results were remarkable. After the first test, the students were given a choice of whether to take a hard or an easy test. A full two-thirds praised for intelligence chose the easy task: they did not want to risk losing their "smart" label. But 90 per cent of the effort-praised group chose the tough test: they wanted to prove just how hard working they were. Then, the experiment gave the students a chance to take a test of equal difficulty to the first test. What happened?
The group praised for intelligence showed a 20 per cent decline in performance, compared with the first test, even though it was no harder. But the effort-praised group increased their score by 30 per cent: failure had actually spurred them on.
And all these differences turned on the difference in six simple words spoken after the very first test.
"These were some of the clearest findings I've seen," Dweck said. "Praising children's intelligence harms motivation and it harms performance."
It is not difficult to figure out why. It is because intelligence-based praise orients the receiver towards the fixed mindset; it suggests to them that intelligence is of primary importance rather than the effort through which intelligence can be transformed. This reveals a radical new approach to the way we engage with children and each other: that we should praise effort, not talent; that we should teach kids to see challenges as learning opportunities rather than threats; that we should emphasise how abilities can be transformed. Experiments have shown that when parents and teachers adopt this approach – and stick to it – the results are remarkable.
This is particularly important with exams looming. With the motivation that emerges from a belief in the power of practise, youngsters can really boost exam performance. In an experiment at Stanford University, for example, students were encouraged towards the growth mindset in a workshop.
At the end of term, these students earned significantly higher grades than the control group.
The key thing is to keep striving. As Thomas Edison put it: "If I find 10,000 ways something won't work, I haven't failed. I am not discouraged, because every wrong attempt discarded is another step forward".
It is a message that should be stapled to the wall of every school in the country.
'Bounce: The Myth of Talent and the Power of Practice' by Matthew Syed is published by 4th Estate

jeudi 5 mai 2011

More Coca-Cola shareholders want info on chemicals in the can


More Coca-Cola shareholders want info on chemicals in the can
Susan Carpenter in LA Times Environment Blog
LA Times Environment Blog
An increasing number of shareholders in the Coca-Cola Co. would like the world's largest beverage firm to report on how it's addressing the risk of Bisphenol A in its beverage cans, the shareholder advocacy group As You Sow reported Wednesday....
Friday, 12:21 AM
An increasing number of shareholders in the Coca-Cola Co. would like the world's largest beverage firm to report on how it's addressing the risk of Bisphenol A in its beverage cans, the shareholder advocacy group As You Sow reported Wednesday.
Twenty-six percent of Coca-Cola shareholders said they were concerned about the company's use of BPA this year versus 22% last year, when As You Sow first introduced its resolution concerning Bisphenol A, or BPA, to shareholders.
BPA is a chemical that is often used in the liners of metal food and drink cans. Studies have shown BPA can leach from cans into food. Dozens of laboratory studies have linked BPA exposure to breast and prostate cancer, infertility, early puberty in girls, obesity and attention deficit hyperactivity disorder. According to the U.S. Centers for Disease Control and Prevention, 93% of Americans have detectable levels of BPA in their bodies.
Coca-Cola sells almost 570 billion beverage servings annually in a variety of packages, including cans.
"For the resolution to get 26%, that's very good. It shows it's getting mainstream support, not just the support of green or social investors," said Michael Passoff, senior strategist for San Francisco-based As You Sow, which introduced the resolution with various investment firms, including Domini Social Investments and Trillium Asset Management Corp.
Coca-Cola spokesman Kent Landers noted that 74% of company shareholders voted against the resolution."The safety and quality of our products is of the utmost importance to our company and has been an enduring obligation for 125 years," he wrote in an email.
He added that BPA is used worldwide in the packaging of thousands of products and is the industry standard for the lining of aluminum and steel food and beverage containers; BPA guards against contaminants and extends a product's shelf life.
He said Coca-Cola is monitoring BPA research and regulatory developments and is also investigating BPA alternatives. "Any new material, assuming it has met all necessary safety reviews and regulatory approvals," he said, "also would have to meet our safety, quality and functional requirements."
RELATED:
Want to reduce BPA exposure? Cut canned foods from your diet, report says
Dollar bills and receipts tainted with BPA, report finds
California Assembly passes bill banning BPA in baby bottles
-- Susan Carpenter
Photo: A visitor to a Coca-Cola factory in Indonesia sips from a Coke. Credit: Bea Wiharta / Reuters
 Read more…