What the climate wars did to science | Matt Ridley
Policy-based evidence making is all too frequent in climate science
"...the great thing about science is that it’s self-correcting.
The good drives out the bad, because experiments get replicated and hypotheses put to the test.
So a really bad idea cannot survive long in science.
Or so I used to think.
Now, thanks largely to climate science, I have changed my mind.
It turns out bad ideas can persist in science for decades, and surrounded by myrmidons of furious defenders they can turn into intolerant dogmas.
This should have been obvious to me.
Lysenkoism, a pseudo-biological theory that plants (and people) could be trained to change their heritable natures, helped starve millions and yet persisted for decades in the Soviet Union, reaching its zenith under Nikita Khrushchev.
The theory that dietary fat causes obesity and heart disease, based on a couple of terrible studies in the 1950s, became unchallenged orthodoxy and is only now fading slowly.
What these two ideas have in common is that they had political support, which enabled them to monopolise debate. 
Scientists are just as prone as anybody else to “confirmation bias”, the tendency we all have to seek evidence that supports our favoured hypothesis and dismiss evidence that contradicts it—as if we were counsel for the defence.
It’s tosh that scientists always try to disprove their own theories, as they sometimes claim, and nor should they.
But they do try to disprove each other’s.
Science has always been decentralised, so Professor Smith challenges Professor Jones’s claims, and that’s what keeps science honest.
What went wrong with Lysenko and dietary fat was that in each case a monopoly was established.
Lysenko’s opponents were imprisoned or killed.
Nina Teicholz’s book The Big Fat Surprise shows in devastating detail how opponents of Ancel Keys’s dietary fat hypothesis were starved of grants and frozen out of the debate by an intolerant consensus backed by vested interests, echoed and amplified by a docile press.
Cheerleaders for alarm
This is precisely what has happened with the climate debate and it is at risk of damaging the whole reputation of science.
The “bad idea” in this case is not that climate changes, nor that human beings influence climate change; but that the impending change is sufficiently dangerous to require urgent policy responses.
In the 1970s, when global temperatures were cooling, some scientists could not resist the lure of press attention by arguing that a new ice age was imminent.
Others called this nonsense and the World Meteorological Organisation rightly refused to endorse the alarm.
That’s science working as it should.
In the 1980s, as temperatures began to rise again, some of the same scientists dusted off the greenhouse effect and began to argue that runaway warming was now likely.
At first, the science establishment reacted sceptically and a diversity of views was aired.
It’s hard to recall now just how much you were allowed to question the claims in those days.
As Bernie Lewin reminds us in one chapter of a fascinating new book of essays called Climate Change: The Facts (hereafter The Facts), as late as 1995 when the second assessment report of the Intergovernmental Panel on Climate Change (IPCC) came out with its last-minute additional claim of a “discernible human influence” on climate, Nature magazine warned scientists against overheating the debate.
Since then, however, inch by inch, the huge green pressure groups have grown fat on a diet of constant but ever-changing alarm about the future.
That these alarms—over population growth, pesticides, rain forests, acid rain, ozone holes, sperm counts, genetically modified crops—have often proved wildly exaggerated does not matter: the organisations that did the most exaggeration trousered the most money.
In the case of climate, the alarm is always in the distant future, so can never be debunked.
These huge green multinationals, with budgets in the hundreds of millions of dollars, have now systematically infiltrated science, as well as industry and media, with the result that many high-profile climate scientists and the journalists who cover them have become one-sided cheerleaders for alarm, while a hit squad of increasingly vicious bloggers polices the debate to ensure that anybody who steps out of line is punished.
They insist on stamping out all mention of the heresy that climate change might not be lethally dangerous...
...And it’s not working anyway.
Despite avalanches of money being spent on research to find evidence of rapid man-made warming, despite even more spent on propaganda and marketing and subsidising renewable energy, the public remains unconvinced.
The most recent polling data from Gallup shows the number of Americans who worry “a great deal” about climate change is down slightly on thirty years ago, while the number who worry “not at all” has doubled from 12 per cent to 24 per cent—and now exceeds the number who worry “only a little” or “a fair amount”.
All that fear-mongering has achieved less than nothing: if anything it has hardened scepticism.
None of this would matter if it was just scientific inquiry, though that rarely comes cheap in itself. The big difference is that these scientists who insist that we take their word for it, and who get cross if we don’t, are also asking us to make huge, expensive and risky changes to the world economy and to people’s livelihoods.
They want us to spend a fortune getting emissions down as soon as possible.
And they want us to do that even if it hurts poor people today, because, they say, their grandchildren (who, as Nigel Lawson points out, in The Facts, and their models assume, are going to be very wealthy) matter more.
Yet they are not prepared to debate the science behind their concern.
That seems wrong to me.
"Texas has been at the forefront of the court fight against the Obama administration’s attempts to make give illegal aliens citizenship by fiat, now the Lone Star State’s governor is cracking down on cities inside his borders that offer sanctuary to illegals.
