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Early Human 'Lucy' Swung from the Trees - Yahoo! News -
"Among the earliest known relatives of humanity definitely known to walk upright was Australopithecus afarensis, the species including the famed 3.2-million-year-old "Lucy." Australopithecines are the leading candidates for direct ancestors of the human lineage, living about 2.9 million to 3.8 million years ago in East Africa. Although Lucy and her kin were no knuckle-draggers, whether they also spent much of their time in trees was hotly debated. Uncovering the answer to this question could shed light on the evolutionary forces that shaped the human lineage. To help resolve this controversy, scientists have for the first time comprehensively analyzed two complete shoulder blades from the fossil "Selam," an exceptionally well-preserved skeleton of a 3-year-old A. afarensis girl dating back 3.3 million years from Dikika, Ethiopia. The arms and shoulders can yield insights on how well they performed at climbing." -
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