1.8-million-year-old skull gives clue about human family tree

This 2005 photo provided by the journal Science shows a pre-human skull found in the ground at the medieval village Dmanisi, Georgia.

The discovery of the estimated 1.8-million-year-old skull of a human ancestor captures early human evolution on the move in a vivid snapshot and indicates our family tree may have fewer branches than originally thought, scientists say... http://wahigtnm/