The oldest distinguishing feature between humans and our ape cousins is our ability to walk on two legs—a trait known as bipedalism. Among mammals, only humans and our ancestors perform this atypical ...

The skeleton of Ardipithecus ramidus, an ancient fossil dubbed "Ardi," is radically changing our ideas about mankind's origins. Kent State University's C. Owen Lovejoy says Ardi shows our ancestors ...

For more than a century, scientists have been piecing together the puzzle of human evolution, examining fossil evidence to understand the transition from our earliest ancestors to modern humans. A new ...