A new study of our two closest living relatives finds that, at least in zoos, bonobos may not be more peaceful than ...

Chimpanzees have a reputation for being aggressive, while bonobos are often seen as their peaceful counterparts. This contrast has frequently been used to explain different sides of human nature.

Chimpanzees that had once formed a cohesive community in Uganda split into factions and turned violent, according to a new ...

Researchers have documented a permanent split between the largest-known group of wild chimpanzees, which erupted into a ...

Bonobos for years have had the reputation of being the cool hippies of the simian world, with a “make love, not war” ethos, in ​contrast to their belligerent cousins, the chimpanzees. But is this ...

AMES, Iowa – Shocking is one word Jill Pruetz uses to describe the behavior she witnessed after a chimp was killed at her research site in Fongoli, Senegal. The fact that chimps would kill a member of ...

One day in June 2015, primatologist Aaron Sandel was watching chimpanzees in Uganda’s Kibale National Park when he saw ...

For two decades, the chimpanzees of Ngogo moved through Uganda’s Kibale National Park as a single society, more than 200 ...

Why the Latest Science Leads Us to a New Theory of Human Nature, by Jonathan Leaf (Bombardier, 320 pp., $21) Ever since Darwin, biologists have believed that much could be learned about human nature ...