Ce chiffre est issu d'une étude en 2014 de la plus grande association de scientifiques américains, l'AAAS.

Ce chiffre est identique à celui du consensus scientifique autour du lien de causalité tabac-cancer, précise l'AAAS.

Based on well-established evidence, about 97 percent of climate scientists have concluded that human-caused climate change is happening."

This agreement, the report continued, is documented not just by a single study, but by a converging stream of evidence over the past two decades from surveys of scientists, content analyses of peer-reviewed studies, and public statements issued by virtually every membership organization of experts in this field.

"We are at risk of pushing our climate system toward abrupt, unpredictable, and potentially irreversible changes with highly damaging impacts," the association concluded. "Disturbingly, scientists do not know how much warming is required to trigger such changes to the climate system."

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