Humans evolved larger brains and flatter faces much faster than other apes, suggesting that intelligence shaped our skulls.

In a series of experiments designed to test the metacognition of these fascinating apes, psychologist Hanna Schleihauf of ...

In our research based in Kibale National Park, Uganda, chimpanzees have been seen applying insects to their own open wounds ...

Chimpanzees at Uganda’s Ngamba Island Sanctuary can do what was once considered an exclusively human trait: form expectations ...

This “unreflective responsiveness to evidence,” as it’s been called, is a mere shadow of human rationality. But Engelmann argues that chimpanzees’ ability to scrutinize evidence and gauge the ...