War, beyond homo sapiens: Peace eludes chimpanzees as well

What Happened

Researchers at Uganda's Kibale National Park report that the Ngogo chimpanzee troop has entered a deadly civil war. The group, once peaceful for decades with approximately 200 members, has experienced 28 deaths over eight years, including nine infants. Competing factions struggle for territorial control. Scientists note that reduced social interaction correlates with increased aggression among the primates.

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