Katie has a PhD in maths, specializing in the intersection of dynamical systems and number theory. She reports on topics from maths and history to society and animals. Katie has a PhD in maths, ...

Chimps may revise their beliefs in surprisingly human-like ways. Experiments showed they switched choices when presented with stronger clues, demonstrating flexible reasoning. Computational modeling ...

When presented with multiple clues about the location of food, chimps revised their choices based only on stronger clues, indicating they were comparing the worth of pieces of information ...

Engelmann says that from the beginning of the Western intellectual tradition, people thought that only humans are rational.

New research suggests chimpanzees can rethink their choices when new evidence emerges, a hallmark of human-like reasoning.

"In theory, you could break any link." Scientists discover concerning behavioral changes in chimps: 'Could something so small ...

When I talk about my time in the field, and how wonderful and fascinating chimpanzees are, one thing that often surprises people is that chimps eat meat. Listeners are truly shocked—"Wait what?" they ...

A new review of recent studies shows that chimpanzees use some of the same medicinal plants as humans. In Uganda, the great apes have been observed applying plants with known beneficial phytochemicals ...

When I first worried about snakes in the forest, everyone told me that the best way to avoid them was to stay near chimpanzees. Chimps are always on the lookout, have a very sharp eye, and give good ...

A chimpanzee escaped its enclosure on Friday morning at the Indianapolis Zoo, forcing a lockdown for visitors for about two ...