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Politicians and activists alike have warned of a looming climate catastrophe for decades. “Biden urged to declare climate change a national emergency,” reported NBC last year. “Climate Changes Threatens Every Facet of U.S. Society, Federal Report Warns,” announced Scientific American.

Cambridge University climate scientist Mike Hulme disagrees. “Declaring a climate emergency has a chilling effect on politics,” he tells Public. “It suggests there isn’t time for normal, necessary democratic process.”

Climate activists may dismiss Hulme as a “climate denier,” but he agrees the planet is warming due to human activities and specifically says we should prepare for more heat waves.

Moreover, Hulme’s credentials are undeniably impressive. He is a Professor at the University of Cambridge and founding Director of the Tyndall Centre for Climate Change Research. Hulme has advised everyone from the United Nations to the UK Government and earned a personalized certificate from the Nobel Peace Prize committee for his work with the UN’s Intergovernmental Panel on Climate Change (IPCC).

Now, in his new book, Climate Change Isn’t Everything, Hulme strongly denounces “climatism,” which he describes as the “unyielding belief that stopping climate change is the pre-eminent yardstick against which all policies must be measured.”