A biological anthropologist explains why humans can't wiggle their toes in the same way they can wiggle their fingers.

New study of 7-million-year-old fossils from Chad proves Sahelanthropus tchadensis walked upright while still climbing trees.

Chimpanzees are our closest living relatives. But how much of their communication resembles ours? A lot, it turns out. According to a study published Monday in the journal Current Biology, chimpanzees ...