Over the past ten years, Americans who are “Alarmed” have grown more than any other audience, from 15% in 2014 to 26% in 2024 (+11 percentage points). Conversely, the Cautious have decreased in size the most during that time, from 23% in 2014 to 18% in 2024 (-5 percentage points). Additionally, the percentage of Americans who are either Alarmed or Concerned has increased from 47% in 2014 to 54% in 2024 (+7 percentage points). The Disengaged, Doubtful and Dismissive audiences have remained relatively similar in size over the past decade. Different audiences in the Six Americas have different knowledge needs. Alarmed and Concerned Americans are most interested in learning about solutions to climate change, and may be most responsive to messages asking them to get involved. The Cautious and Doubtful, in contrast, want to know more about the causes and evidence that climate change is happening, and may be most responsive to messaging that explains the scientific consensus around global warming.