New analysis of Ardi, a 4.4-million-year-old hominin fossil, provides evidence of the evolutionary step that shifted early primates from climbing to bipedal walking. The discovery advances understanding of human evolution and the biological mechanisms that distinguish our lineage from other apes.
Popular Mechanics · Monday, 29 June 2026
Scientists studying a 4.4-million-year-old fossil named Ardi may have uncovered the evolutionary step that turned ancient climbers into early walkers.
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