A slightly sadistic experiment aims to find out why heat drives up global conflict

https://www.npr.org/sections/goatsandsoda/2023/08/11/ [login to see] /a-slightly-sadistic-experiment-aims-to-find-out-why-heat-drives-up-global-confli
Here's an experiment that seems excruciating to imagine in the midst of the current global heat wave: Starting six years ago, researchers began putting thousands of people in baking hot rooms to find out if high temperatures may make us more violent. The findings surprised even the scientists – and could have major implications for world peace.

How to test for aggression
The subjects of this experiment included college students in Nairobi, Kenya. In groups of six they were ushered into one of two rooms. The first was a comfortable 68 degrees. The second was that hot room, cranked up to 86 degrees – as high as the researchers figured they could go without endangering people's health.