Fifty years ago this weekend, there was a team of archaeologists digging in Ethiopia, looking for early fossils of human ancestors. After an uneventful morning, Donald Johanson walked back to his Land ...

Fifty years ago, our understanding of human origins began to change with the discovery of Lucy, a remarkably complete, 3.2-million-year-old human relative unearthed from the sandy soil in Hadar, ...

FILE - The framed hominid fossil "Lucy," is seen at a exhibition at the Ethiopian Natural History Museum in the Ethiopian capital of Addis Ababa, Tuesday, Oct. 24, 2006. (AP Photo/Les Neuhaus, file) ...

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