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 ...

Two adult male members of the Ngogo chimpanzee group at Kibale National Park form a coalition and chase off other males. via REUTERS They’re going apes – – t. A scenic Ugandan jungle has become a ...

A long-running conflict in a Ugandan park may provide clues to the origins of human warfare, and how to avoid it. By Carl Zimmer Since 1995, scientists have tracked a huge group of chimpanzees living ...

In the 1970s, the late Jane Goodall observed a community of chimpanzees in Gombe, Tanzania, breaking into two factions; the males in one group ended up killing all the males in the rival group over ...

Free Expression is a daily newsletter on American life, politics and culture from the Opinion pages of The Wall Street Journal. Sign up and start reading Free Expression today. Warfare is often ...

Researchers have documented a permanent split between the largest-known group of wild chimpanzees, which erupted into a lethal civil war over the past several years — findings that could help ...

A once harmonious group of wild chimpanzees has split into two, leading to intractable conflict and escalating violence. Researchers say the rift suggests that human wars are a deeply rooted part of ...

A 30-year study documents a rare split within a chimpanzee community in Uganda’s Kibale National Park — one that sparked a deadly war. Two rival chimp groups have staged coordinated raids that killed ...

The largest group of wild chimpanzees known to scientists has permanently split in two. In a study published in Science, researchers from the University of Texas at Austin and other institutions ...

Two once-harmonious groups of chimpanzees in Uganda’s Kibale National Park suddenly became estranged and have spent the past eight years engaged in a bloody conflict, according to a study published ...