"Lucy's 3D muscle reconstruction confirms upright walking and tree climbing abilities"

A 3D digital re-creation of the muscular anatomy of "Lucy," an Australopithecus afarensis fossil, has confirmed that she was capable of walking fully erect. The 3.2 million-year-old hominin was among the first to walk upright, and the new study, published in the journal Royal Society Open Science, suggests that she was as proficient at bipedalism as modern humans. The study also suggests that Lucy was possibly also at home in the trees.