The 'Lucy' fossil skeleton is one of the best-known finds in anthropology. Now, researchers have found a skeleton of the oldest known upright-walking animal, thought to be even older than Lucy's 3.2 ...

The story of humankind is reaching back another million years as scientists learn more about “Ardi,” a hominid who lived 4.4 million years ago in what is now Ethiopia. The 110-pound, 4-foot female ...

She was, for a while, the oldest known member of the human family. Fifty years after the discovery of Lucy in Ethiopia, the remarkable remains continue to yield theories and questions. In a ...

Do we have to go back and "unlearn" all they taught us in school about Lucy? I heard she had been demoted, sort of like Pluto. It was wholly a pleasure to hear from you and a privilege to share your ...

new video loaded: Obama meets Lucy, an ancient 'ancestor,' attends Ethiopia state dinner Before a state dinner in Ethiopia, U.S. President Barack Obama meets the country's oldest resident - "Lucy," a ...

Robert Siegel talks about the discovery in Chad with Donald Johanson, founder of the Institute of Human Origins in Berkeley, Calif. Dr. Johanson is the paleoanthropologist who discovered the 3.18 ...