This report documents a continued upward trend in Americans’ concern about global warming, as reflected in several key indicators tracked since 2008, including substantial increases in Americans’ certainty that global warming is happening and harming people in the United States now. The proportion of Americans who are very worried about global warming has more than tripled since its lowest point in 2011. Increasing numbers of Americans say they have personally experienced global warming and that the issue is personally important to them.
Climate Change in the American Mind: December 2018
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