These Chimps Began the Bloodiest ‘War’ on Record and No One Knows Why

Carl Zimmer at the New York Times: On Thursday, a group of researchers reported that the Ugandan chimps are locked in a primate version of civil war. Two factions split about a decade ago and have been engaged in a highly lethal conflict ever since. Scientists have never seen such widespread, long-r.

Scientists have never seen such widespread, long-r.