From August 2023 to March 2024, the Federation of American Scientists (FAS) talked with +85 experts to source 20 high-demand opportunity areas for ready policy innovation and 65 policy ideas. In response, FAS recruited 33 authors to work on +18 policy memos through our Extreme Heat Policy Sprint from January 2024 to April 2024, generating an additional +100 policy recommendations to address extreme heat. Our experts’ full recommendations will be published in April 2024; this report previews key findings. In total, FAS has collected +165 recommendations for 34 offices and/or agencies. Below, you will find 165 policy ideas developed through expert engagement.