“Lucy” was bipedal, but scientists have long debated whether she was a part-time tree dweller. New scans of her 3.18 million year old skeleton reveal internal structures in her bones that hint she frequently used her arms to climb trees.
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from Innovation and Digital Marketing http://www.livescience.com/57060-human-ancestor-lucy-was-a-tree-climber-bone-scans-reveal-video.html?utm_source=rss&utm_medium=rss
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