From a new study concluding that "9 out of 10 books published since 1972 that have disputed the seriousness of environmental problems and mainstream science can be linked to a conservative think tank":

Environmental scepticism began in the US, is strongest in the US, and exploded after the end of the Cold War and the emergence of global environmental concern stimulated by the 1992 Earth Summit. Environmental scepticism is an elite-driven reaction to global environmentalism, organised by core actors within the conservative movement. Promoting scepticism is a key tactic of the anti-environmental counter-movement coordinated by CTTs, designed specifically to undermine the environmental movement's efforts to legitimise its claims via science. Thus, the notion that environmental sceptics are unbiased analysts exposing the myths and scare tactics employed by those they label as practitioners of 'junk science' lacks credibility. Similarly, the self-portrayal of sceptics as marginalised 'Davids' battling the powerful 'Goliath' of environmentalists and environmental scientists is a charade, as sceptics are supported by politically powerful CTTs funded by wealthy foundations and corporations.

But skepticism, to use the Americanized version of the word, still matters wherever its sources. Subjecting policy proposals to cost-benefit analyses, trying to understand whether the means are commensurate with the ends, and whether the ends can even be achieved: these are all vital to successful environmentalism. And it is not a good sign when greens seem eager to discredit dissent rather than engage it.

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