A November 2022 study by researchers at Brown, Boston and Harvard universities found that 13% — or 271 — of the deaths in Texas prisons without universal AC between 2001 and 2019 may be attributed to extreme heat. Prisoner advocates say those numbers are only likely to increase as the state faces more extreme weather and heat due to climate change.

About two-thirds of Texas prisons are not fully air conditioned, and dozens of inmates have died in the sweltering heat.