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Showing posts with label global warming. Show all posts
Showing posts with label global warming. Show all posts

Thursday 17 September 2009

Never Retract, Never Apologise, Never Explain

Just raise the volume, keep moving and hope that people won’t notice the trail of broken claims. That's what Creationists and climate change deniers have in common: they don’t answer their critics.


George Monbiot


Creationists and climate change deniers have this in common: they don’t answer their critics. They make what they say are definitive refutations of the science. When these refutations are shown to be nonsense, they do not seek to defend them. They simply switch to another line of attack. They never retract, never apologise, never explain, just raise the volume, keep moving and hope that people won’t notice the trail of broken claims in their wake.

This means that trying to debate with them is a frustrating and often futile exercise. It takes 30 seconds to make a misleading scientific statement and 30 minutes to refute it. By machine-gunning their opponents with falsehoods, the deniers put scientists in an impossible position: either you seek to answer their claims, which can’t be done in the time available, or you let them pass, in which case the points appear to stand. Many an eminent scientist has come unstuck in these situations. This is why science is conducted in writing, where claims can be tested and sources checked.

So when the Australian geologist Professor Ian Plimer challenged me to a face-to-face debate in July, I didn’t exactly leap at the chance. His book Heaven and Earth, which purports to destroy the science of climate change, contains page after page of schoolboy errors and pseudoscientific gobbledegook. As the professor of astrophysics Michael Ashley wrote, “It is not ‘merely’ atmospheric scientists that would have to be wrong for Plimer to be right. It would require a rewriting of biology, geology, physics, oceanography, astronomy and statistics.” But never, as far as I can determine, has Plimer responded to the devastating points made by his critics. He just keeps shifting his ground.

None of this stopped the Spectator from publishing a cover story promoting his claims. Plimer, the magazine suggested, has demonstrated that global warming theory is “the biggest, most dangerous and ruinously expensive con trick in history.

I wrote an article summarising what scientists have said about Plimer’s claims and listing some of his obvious errors. In response, Plimer requested a debate. The outgoing editor of the Spectator, Matthew D’Ancona, took up this cause, with a series of emails pressing me to accept (all the correspondence is on my website). At first, having seen something of Plimer’s debating tactics, I refused. But then I realised that there might be a means of pinning him down.

I told Plimer that I would accept his challenge if he accepted mine: to write precise and specific responses to the questions I would send him, for publication on the Guardian’s website. If he answered them, the debate would go ahead; if he didn’t, it wouldn’t happen. The two exchanges would complement each other: having checked his specifics, people at the public event could better assess his generalisations.

Plimer refused. After I wrote a blog post accusing him of cowardice, he accepted. I sent him 11 questions. They were simple and straightforward: I asked him only to provide sources and explanations for some of the claims in his book. Any reputable scientist would have offered them without hesitation.

But instead of answers, Plimer sent me a series of dog-ate-my-homework excuses and a list of questions of his own (you can read both sets on my Guardian blog). While mine address only what Plimer purports to know, his appear designed to be impossible to answer: they are less questions than riddles. Were you to take them seriously, every answer would require several years of original research. Gavin Schmidt, a senior climate scientist at NASA, examined them and found that most are 24-carat bafflegab, while the rest have already been answered by other means. But that wasn’t the point. Plimer’s purpose appears to have been to distract attention from the fact that he can’t answer my questions. Last Tuesday I offered Ian Plimer a £10 bet that he cannot answer his own questions. He has not yet accepted.

Having put up with this nonsense for almost a month, I gave him a 10-day deadline, after which I would assume that he had chickened out of our exchange and forfeited the debate. The deadline expired on Friday. Answers came there none.

There is nothing unusual about Ian Plimer. Most of the prominent climate change deniers who are not employed solely by the fossil fuel industry have a similar profile: men whose professional careers are about to end or have ended already. Attacking climate science looks like a guaranteed formula for achieving the public recognition they have either lost or never possessed. Such people will keep emerging for as long as the media is credulous enough to take them seriously.

What’s odd is the readiness of publications like the Spectator to champion them. During my correspondence with Matthew D’Ancona, I asked what it is about climate change that makes intelligent people like him abandon all editorial standards. Why is he prepared to endorse Ian Plimer’s claims, but not those of people who claim that the entire canon of lunar science is wrong and the moon is in fact made of green cheese?

He replied as follows: “All you say may well be true, which fortifies my belief that a debate would be fantastic!” I pressed him again. “I think the answer,” he replied “may be that what I call mischievous – and it is part of the Spectator Editor’s job description to be mischievous – you would call deeply immoral and grotesquely irresponsible. The response to Plimer’s piece – for and against – was passionate and cacophonous: exactly what I had hoped. Again, that may not strike you as an excuse. But perhaps it suffices as an explanation.”

I told him that while the Spectator publishes noisy and provocative articles all the time, in most cases they are grounded in fact. This article was grounded in gibberish. So why climate change? Why is this issue uniquely viewed as fair game by editors who tread carefully around other scientific issues for fear of making idiots of themselves? And where is the mischief in doing what hundreds of publications and broadcasters have already done - claiming that manmade climate change is a myth? Surely to be mischievous you have to be original?

D’Ancona replied “I can only speak for myself and say that, as an editor, I don’t single it out for loony treatment.” So I asked him for examples of loony articles he had published on other scientific matters. He replied “Well, MMR for a start where I supported Wakefield initially!”. But when Andrew Wakefield first suggested that the MMR vaccine is linked to autism, it was an original claim which, while unsupported, had yet to be debunked. Today we have 20 years of evidence, across tens of thousands of peer-reviewed papers, to show that people like Ian Plimer are talking out of their hats.

So Plimer won’t provide his sources and D’Ancona won’t explain why he singled out climate change. But at least, after this frustrating episode, I have an answer to my questions: neither of them has a leg to stand on.

Tuesday 30 January 2007

Don't be fooled by Bush's defection: his cures are another form of denial



The president's avowed conversion on climate change is illusory. He is just drumming up new business for his chums

George Monbiot
Tuesday January 30, 2007
The Guardian


George Bush proposes to deal with climate change by means of smoke and mirrors. So what's new? Only that it is no longer just a metaphor. After six years of obfuscation and denial, the US now insists that we find ways to block some of the sunlight reaching the earth. This means launching either mirrors or clouds of small particles into the atmosphere.
The demand appears in a recent US memo to the Intergovernmental Panel on Climate Change. It describes "modifying solar radiance" as "important insurance" against the threat of climate change. A more accurate description might be important insurance against the need to cut emissions.
Every scheme that could give us a chance of preventing runaway climate change should be considered on its merits. But the proposals for building a global parasol don't have very many. A group of nuclear weapons scientists at the Lawrence Livermore laboratory in California, apparently bored of experimenting with only one kind of mass death, have proposed launching into the atmosphere a million tonnes of tiny aluminium balloons, filled with hydrogen, every year. One unfortunate side-effect would be to eliminate the ozone layer.
Another proposal, from a scientist at the National Centre for Atmospheric Research, in Boulder, Colorado, suggests spraying billions of tonnes of sea-water into the air. Regrettably, the production of small salt particles, while generating obscuring mists, could cause droughts in the countries downwind. Another scheme would inject sulphate particles into the stratosphere. It is perhaps less dangerous than the others, but still carries a risk of causing changes in rainfall patterns. As for flipping a giant mirror into orbit, the necessary technologies are probably a century away. All these fixes appear more expensive than cutting the amount of energy we consume. None reduces the concentration of carbon dioxide in the atmosphere, which threatens to acidify the oceans, with grave consequences for the food chain.
The demand that money and research be diverted into these quixotic solutions is another indication that Bush's avowed conversion to the cause of cutting emissions is illusory. He is simply drumming up new business for his chums. In his state of the union address last week, he spoke of "the serious challenge of global climate change" and announced that he was raising the government's mandatory target for alternative transport fuels fivefold. This is wonderful news for the grain barons of the red states, who will grow the maize and rapeseed that will be turned into biofuel. It's a catastrophe for everyone else.
An analysis published last year by the Sarasin Bank found that until a new generation of vegetable fuels, made from straw or wood, is developed, "the present limit for the environmentally and socially responsible use of biofuels [is] roughly 5% of current petrol and diesel consumption in the EU and US". Bush now proposes to raise the proportion to 24% by 2017. Already, though the rich world has replaced just a fraction of 1% of its transport fuels, the UN Food and Agriculture Organisation reports that using crops to feed cars has raised world food prices, with serious consequences for the poor. Biofuels fall into the same category as atmospheric smoke and mirrors - a means of avoiding difficult decisions.
But at least, or so we are told, the argument over whether or not manmade climate change is happening is now over. On Friday the Intergovernmental Panel on Climate Change publishes the first installment of its vast report, which collates the findings of the world's climate scientists. Though conservative in its assumptions, it shows that if you persist in believing that there is no cause for concern, you must have buried your head till only your toes are showing. If even Bush now grudgingly acknowledges that there's a problem, surely we've seen the last of the cranks and charlatans who had managed to grab so much attention with their claims that global warming wasn't happening?
Some chance. A company called Wag TV is currently completing a 90-minute documentary for Channel 4 called The Great Global Warming Swindle. Manmade climate change, the channel tells us, is "a lie ... the biggest scam of modern times. The truth is that global warming is a multibillion-dollar worldwide industry: created by fanatically anti-industrial environmentalists; supported by scientists peddling scare stories to chase funding; and propped up by complicit politicians and the media ... The fact is that CO2 has no proven link to global temperatures ... solar activity is far more likely to be the culprit."
So it's the same old conspiracy theory we've been hearing from the denial industry for 10 years, and it carries as much scientific weight as the contention that the twin towers were brought down by missiles. The programme's thesis revolves around the deniers' favourite canard: that the "hockey-stick graph" showing rising global temperatures is based on a statistical mistake made in a paper by the scientists Michael Mann, Raymond Bradley and Malcolm Hughes. What it will not be showing is that their results have been repeated several times by other scientists using different statistical methods; that the paper claiming to have exposed the mistake has been comprehensively debunked; and that the lines of evidence used by Mann, Bradley and Hughes are just a few among hundreds demonstrating that 20th-century temperatures were anomalous.
The decision to commission this programme seems even odder when you discover who is making it. In 1997 the director, Martin Durkin, produced a similar series for Channel 4 called Against Nature, which also maintained that global warming was a scam dreamed up by environmentalists. It was riddled with hilarious scientific howlers. More damagingly, the only way in which Durkin could sustain his thesis was to deceive the people he interviewed and edit their answers to change their meaning. After complaints by his interviewees, the Independent Television Commission found that "the views of the four complainants, as made clear to the interviewer, had been distorted by selective editing" and that they had been "misled as to the content and purpose of the programmes when they agreed to take part". Channel 4 was obliged to broadcast one of the most humiliating primetime apologies it has made. Are institutional memories really so short?
So the whole weary business of pointing out that the evidence against man-made climate change is sparse and unable to withstand critical scrutiny, while the evidence in favour is overwhelming and repeatedly confirmed, must begin all over again. How often must scientists remind the media that a handful of cherry-picked studies does not amount to the refutation of an entire discipline?
But with Bush's defection, the band of quacks making these claims is diminishing fast. Now the oil and coal companies that support such people have changed their target. Instead of trying to persuade us that man-made global warming is a myth, they are seeking to divert us into doing everything except the one thing that has to happen: reducing our consumption of fuel. It is another species of denial.
George Bush's purpose - to insulate these companies from the need to cut production - is unchanged. He has simply found a new way of framing the argument.