Yale Program on Climate Change Communication

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Four in ten Americans are either “extremely” or “very” sure global warming is happening (40%). About one in ten Americans is “extremely” or “very sure” global warming is not happening (8%). The percentage who are sure global warming is happening ticked up slightly since spring of 2015, while the percentage who are sure global warming is not happening has remained relatively steady over the past several years. This chart is from our report, “Climate Change in the American Mind: October 2015.”