In Thigh: Scientists Say Oldest Primate Walked Upright

Scientists have concluded that the world's oldest primate fossil known as the Millennium Ancestor belongs to a group that includes prehistoric humans rather than apes. Investigators studying the remains have determined that the six-million-year-old species walked upright, a characteristic that separated human ancestors from apes. VOA's Jessica Berman reports. Ever since the fossil of the six milli ...Thigh