ape-faced human ancestor walked steadily on two feet. To get a picture of how Lucy's species, Australopithecus afarensis, moved, scientists compare fossils to the bones of modern humans ...

How do we know if an early ape-man or woman walked upright? An examination of certain bones -- a tibia ... along the outside of the foot, and then through the middle toes. A human foot transmits ...

The site, an eroded limestone cave called Malapa, is in a region already so famous for its ancient human fossils ... right down to tiny bones of the hands and feet. Indeed, the rapid entombment ...

Lucy's bones suggest that she walked in an upright position, like a human, but possessed a relatively small ape-like skull. Lucy's foot bones show that she had similar feet to modern humans but ...