A rare chimpanzee ‘civil war’ is happening. It could teach us about human conflict

By Taylor Nicioli, CNN (CNN) — Aaron Sandel can pinpoint when it all started. The codirector of the Ngogo Chimpanzee Project had been observing a group of apes on June 24, 2015, in Uganda’s Kibale National Park, where the project is located, when he suddenly noticed the chimps fall silent. Several began grimacing, a facial