Swiss Re SONAR 2025 Report: Global Heat Kills 480,000/Year

Image by Casey Horner.

Extreme heat is one of the world’s leading killers, outdistancing worldwide conflicts of 233,000 deaths in 2024 by more than double the count at 480,000 people dead from extreme heat. All indications suggest the death count via extreme heat is headed much higher because global warming is not appreciably slowing down as global CO2 emissions in the atmosphere increase every year like clockwork, setting new record levels every year, blanketing/retaining more heat every year.