ETHIOPIA-US-ARCHAEOLOGY-LUCY

3.2 million year-old fossil "Lucy" is unveiled at Addis Ababa's National Museum on May 7, 2013. The fossil, discovered in 1974 in Ethiopia's Harar region, has returned home after a five-year tour of the US. It is the first time the skeleton has been on display in Ethiopia since 2000, and will be part of a temporary exhibition until May 13 before she is stored for research. Lucy is no longer the oldest-known member of the human family tree, but with 40 percent of her skeleton recovered, she is the oldest, most complete specimen of an early human species, standing about 3 feet, 6 inches tall and weighing approximately 60 pounds. She is named Lucy after the well-known Beatles tune, which her discoverers were listening to the day she was found. AFP PHOTO / JENNY VAUGHAN (Photo credit should read JENNY VAUGHAN/AFP via Getty Images)