More than 3 million years ago, a chimp-sized creature climbed a tree to take a nap. Later, she clambered back down, stood up on two legs and strolled off to find some food, or maybe a mate. Or maybe another tree to scale.
Courtesy of Zeresenay Alemseged/Dikika Research Project
That’s a controversial view of how the famous human ancestor Lucy and her kind, Australopithecus afarensis, maneuvered about the landscape.
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