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

We may only ever have 47 of the 207 bones that made up the skeleton of this 3.18-million-year-old Australopithecus afarensis specimen known affectionately and widely as Lucy, but it’s been enough to ...

Researchers reveal the way our legs adapt to fast movements. When people hop at high speeds, key muscle fibers in the calf shorten rather than lengthen as forces increase, which they call 'negative ...