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The September 2021 report 'Climate Change in the American Mind' provides a comprehensive data set tracking US public opinion on global warming. Key findings include a rise in the percentage of Americans who believe global warming is happening (76% in September 2021) and an increase in those who are 'Very worried' about it (35%). The data also shows a growing consensus that global warming is caused by human activities (60%) and is affecting US weather (70%), specifically impacting wildfires (50% 'A lot') and extreme heat (49% 'A lot').

The report identifies six audience segments in the US—the Alarmed, Concerned, Cautious, Disengaged, Doubtful, and Dismissive—and tracks their evolution from 2008 to 2012. It finds that 70% of the public (Alarmed, Concerned, and Cautious) believe global warming is a real threat. While there is broad support for increasing renewable energy and eliminating fossil fuel subsidies, perceptions of political influence are skewed, with most segments believing campaign contributors and fossil fuel companies have the most power over elected officials.