GPS navigation systems, for example, rely on Einstein's theories to account for the effects of gravity on time, ensuring accurate location tracking. The theory of relativity ... and even cutting-edge ...

The setup is simple. One partner points out a bird to the other — or in a common variation, recounts a fake bird encounter from earlier in the day — and awaits a response. A partner who responds with ...

Chimpanzees use a variation of the "scientific method" — discarding prior beliefs if convincing new evidence comes along to change their minds, research shows.