Ball point pen on the morning newsprint
An international group of scientists have unveiled our oldest known human ancestor. Ardi or Ardipithecus was a four foot, 110 pound female that lived 4.4 million years ago in the once forested area of north eastern Ethiopia. Ardi predates Lucy by a million years. but she's not the missing link between chimpanzees and humans that many have hypothesized about. She had an unexpected mix of advanced characteristics and primitive traits.