If you believe the level of rancor and hostility in the debate over global warming seems particularly high, there might be a reason for that, and that reason might be...wait for it...global warming! At least according to this story...
From National Geographic:
Global warming could make the world a more violent place, because higher temperatures increase human aggression and create volatile situations, a new study says.
The report combined government data about average yearly temperatures with statistics on the number of violent crimes committed between 1950 and 2008. Based on those records, the authors estimate that if the average temperature in the U.S. increases by 8 degrees Fahrenheit (4.4 degrees Celsius), the country's murder and assault rate will jump by about a hundred thousand cases a year.