A unified chimpanzee society shattered into warring factions.

Between 2018 and 2024, one faction of chimpanzees at Uganda's Kibale National Park killed 7 adult males and 17 infants from a rival group. Fourteen more adult males vanished — bodies never recovered. The study, published in Science and led by Aaron Sandel of the University of Texas at Austin, documents the first confirmed chimpanzee "civil war": a large community fracturing into two hostile…

Chimpanzees consume enough fermented fruit to test positive for alcohol, hinting at our evolutionary past.

More than a century ago, the Chinese paleontologist and archaeologist Pei Wenzhong found an unusual trove in the same cave near Beijing where he found the skulls of the early hominin Peking Man. Along with the remains of a 700,000-year-old _Homo erectus_ , Wenzhong unearthed a collection of 20 quartz crystals, one of which was a "perfectly faceted, smoky quartz crystal," the researcher Juan…