- Two researchers argue that climate is the primary driver of aggression
- They say there's a "general trend" between proximity to the equator and violence
One of the uncomfortable facts of life is that some countries — and within the U.S., some states — are more violent than others. Figuring out what makes societies and communities more violent is a big-time quest for social scientists, since if you know what leads to killing, you'll have a better shot at defusing it. Drawing on a host of studies, a new paper (PDF) in Behavioral and Brain Sciences -- lead-authored by Paul A. M. Van Lange of Vrije Universiteit, Amsterdam -- proposes a model for understanding violence with the only somewhat forced-sounding acronym CLASH, short for CLimate, Aggression, and Self-control in Humans.