Lucy, the most complete skeleton of an early human ancestor yet discovered, got the opportunity of a lifetime on Monday when she was introduced to US President Barack Obama during his visit to Ethiopia.The skeleton, whose formal name is AL-288-1 — referring to several hundred pieces of 3.3 million-year-old bone from a female Australopithecus afarensis discovered in Ethiopia's Afar region — met the president during a state dinner at Ethiopia's National Palace.By The Associated Press
