Questioning 'Ardi,' Man's 4.4-Million-Year-Old Ancestor

Foxnews.com, “Questioning 'Ardi,' Man's 4.4-Million-Year-Old Ancestor,” May 27, 2010 ; http://www.foxnews.com/scitech/2010/05/27/ardi-ancestor-evolution/

Subjects: Lucy and Other Hominids