The more we try to understand chimpanzees, one of our closest relatives, the more we find ourselves humbled by the richness and complexity of their lives — and of their intelligence. Today, on World ...

A recent study assessed wild chimpanzees’ use of sticks as a tool, monitoring how chimps of different ages gripped and manipulated the implement to retrieve food from tricky places. The study found ...

We don't just have sex to reproduce—new research suggests that using sex to manage social tension could be a trait that existed in the common ancestor of humans and apes six million years ago. Humans ...