A hotter world will be more violent, studies say - The Washington Post

As the planet warms, experts have increasingly sounded the alarm over the potential for increased climate-driven geopolitical conflict. Two new studies underscore how rising temperatures are likely to increase aggression and violent behavior at the individual level as well. They arrive at a similar conclusion using two very different data sets: crime in Los Angeles and terrorist attacks around the world....
https://www.washingtonpost.com/business/2019/07/16/two-new-studies-warn-that-hotter-world-will-be-more-violent-one/