In the face of threats from other groups, humans, chimpanzees, and a selection of other species get closer to their own. Now an international team led by Kyoto University has shown that even our more ...

A link between outgroup threats and ingroup cohesion has been considered since the time of Darwin to be an adaptation for group-based competition. During the years since, studies of all sorts -- from ...

The discovery of a never-before-seen bump on the leg bone of a 7 million-year-old fossil ape shows it walked upright on two legs while it was on the ground, a new study finds. Only members of the ...

The bonobo (Pan paniscus), humanity’s closest cousin, appears to communicate in a way scientists believed was exclusive to humans. Researchers from the University of Zürich and Harvard University said ...