Wild monkeys in West Africa can climb vertical tree trunks using foot flexibility scientists did not realize they possessed.

Examples for positive, neutral and negative expressions. Copyright held by the authors. Humans perceive emotional expressions displayed by non-human primates and ...

Saliva is a bodily fluid most of us take for granted despite the significant roles it plays: aiding in digestion, maintaining strong teeth and defending against oral disease. However, the evolution of ...

A chimpanzee mother cracks a nut using a rock hammer and anvil in Republic of Guinea. Credit: Tetsuro Matsuzawa, Kyoto University A University of Calgary archaeologist who is one of the few ...

See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. Heated disagreements about sexuality and gender are front and center in ...