HELP US END MASS INCARCERATION The Prison Policy Initiative uses research, advocacy, and organizing to dismantle mass incarceration. We’ve been in this movement for 23 years, thanks to individual donors like you.

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bar chart showing that suicide, heart disease, and overall deaths increase when summer temperatures are hotter than average, and increase even more after a three-day heatwave

Data Source: Skarha, J. et al (2023), Heat-related mortality in U.S. state and private prisons: A case-crossover analysis. PLOS ONE 18(3):e0281389. (Graph: Leah Wang, 2023)

This graph originally appeared in Heat, floods, pests, disease, and death: What climate change means for people in prison.

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