On the ground, chimpanzees use a characteristic gait called knuckle-walking, and although they can walk on two legs for short distances, their gait is not much like ours. Perhaps the most ...

Imagine the scene, around 3 million years ago in what is now east Africa. By the side of a river, an injured antelope keels ...

To get a picture of how Lucy's species, Australopithecus afarensis, moved, scientists compare fossils to the bones of modern humans, as well as to the anatomy of "knuckle-walking" primates like ...

Dr. Simpson’s primary research addresses exploring early human evolution between 6.5 and 1.0 Ma ago. Since 1992, Dr. Simpson has been conducting paleontological field research in the Afar region of ...