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 ...

A new study reveals humans evolved from African ape-like ancestors. Researchers analysed the ankle bones of Ardipithecus ramidus, nicknamed “Ardi.” The fossil is 4.4 million years old. Ardi possesses ...