Conspiracy theorists are often the subject of scorn or mockery; 
rejected and ridiculed by the rest of us, they hide away on internet 
chat forums where they blather on about the collapse of 7 World Trade 
Center, the rise of the Illuminati or the omnipresence of Mossad. Not 
the climate-change deniers. Unlike Israel's intelligence agency, they 
really do seem to be omnipresent these days. Indeed, unlike the 
Illuminati, they even control national governments.
 
For instance, Australia's new prime minister, Tony Abbott, has called 
the science on climate change "absolute crap" and already abolished the 
country's Climate Commission. In 2012, Mitt Romney, the Republican 
nominee for the most important job in the world, was of the view that 
"we don't know what's causing climate change on this planet". Here in 
the UK, the Environment Secretary, Owen Paterson, a Conservative, is, in
 the words of the 
Financial Times, a "known climate change 
sceptic". So, too, is a Conservative member of the Commons energy and 
climate change committee, Peter Lilley.
 
Denialism abounds. In March, a YouGov poll found that only 39% of the 
British public believed human activity was making the world warmer, down
 from 55% in 2008, while the proportion of Brits who believed that the 
world wasn't getting warmer had quadrupled - up from 7% in 2008 to 28%.
 
Depressingly, you can draw no other conclusion from these facts than 
that the conspiracy theorists are winning. The deniers of global warming
 have come in from the cold. The "merchants of doubt", to borrow a 
phrase from the science historians Naomi Oreskes and Erik Conway, seem 
to have perfected the dark art of "keeping the controversy alive", 
sowing seeds of doubt and confusion in the minds of politicians, 
journalists and voters, in spite of the scientific consensus.
 
Thus, I use both the terms "denier" (rather than "sceptic") and 
"conspiracy theorist" advisedly. After all, they either deny that the 
world is warming or deny that mankind is responsible for this warming. 
Remember: 97% of climate scientists agree the world is warming and that 
mankind is responsible. Consider also: a survey by Oreskes of every 
peer-reviewed abstract on the subject "global climate change" published 
between 1993 and 2003 - 928 in total - couldn't find a single paper that
 rejected the consensus position on human-induced climate change.
 
The real sceptics are the cautious scientists of the Intergovernmental 
Panel on Climate Change who, year after year, assess and reassess the 
new data and go through thousands of peer-reviewed studies, forming 
groups and committees to check and doublecheck the results.
 
As for the "conspiracy theorist" tag, let me be blunt: climate-change 
deniers are the biggest conspiracy theorists of all. In order to embrace
 the delusions of the deniers, you have to adopt the belief that tens of
 thousands of researchers, some of them awardwinning scientists, from 
across the world (not to mention the political spectrum) have conducted 
behind the scenes, undetected by the media, a campaign of peer-reviewed 
deceit in defiance of empirical data. How else to explain what the US 
Republican senator James Inhofe, a darling of the deniers, calls "the 
greatest hoax ever perpetrated against the American people"?
 
Yet it isn't just barmy GOP politicians. Or the gaffe-prone prime 
minister of Australia. Take Richard Lindzen, the doyen of the selfstyled
 "climate sceptics" and a tenured professor of meteorology at the 
Massachusetts Institute of Technology. Earlier this year, I interviewed 
him for my al-Jazeera TV series 
Head to Head;
 unlike the vast majority of his fellow deniers, Lindzen has the 
advantage of being a trained scientist who has bothered to study our 
planet's climate.
 
Why, I asked the softly-spoken professor, did he think national 
academies of science from 34 different countries - including the United 
States, the United Kingdom, China, India, Russia, France, Germany, 
Japan, Mexico, Canada, Brazil and South Africa - had all signed up to 
the IPCC consensus position on man-made climate change?
 
Richard Lindzen: "They've been told: 'Issue a statement on this.'"
Me: "Told by who?"
RL: "Well, I'd rather not say, to be honest."
Me: "Why not?"
RL: "Because in each case, it would be in some ways embarrassing - I 
mean, each of them are dependent [sic] on the goodwill of the 
government. And if they're told 'sign on', they'll sign on."
 
Huh? Are we expected to believe that 34 different national academies of 
science are all working hand in glove with their country governments to 
exaggerate the impact of carbon-dioxide emissions on the climate and 
cover up the supposed evidence of global cooling? To what end - and on 
whose orders? Greenpeace? Al Gore?
 
To be honest, I don't have a problem with most conspiracy theorists. If 
they want to believe that the 9/11 attacks were an "inside job" or that 
the Nasa moon landings were "faked", so be it. Each to his own. In any 
case, most of these cranks and clowns do no harm to anything, other than
 their own reputation (or non-reputation).
 
But the climate-change deniers of today, with their astonishing 
combination of manufactured doubt, faux outrage, mass paranoia and 
evidence-free pseudoscience, are endangering our planet. According to 
the World Health Organisation, "climatic changes already are estimated 
to cause over 150,000 deaths annually". The poorest countries, 
incidentally, bear the brunt of these preventable fatalities.
 
It's no laughing matter. This particular conspiracy theory costs lives. 
 
Mehdi Hasan is the political director of the Huffington Post UK and a contributing writer for the New Statesman, where this article is cross-posted
   
  
  
            
      
  
 
   
    
     Follow Mehdi Hasan on Twitter:
     
      www.twitter.com/mehdirhasan