libertasacademica: What Makes Humans Special? Hallmark traits of the human body did not all arise an

libertasacademica: What Makes Humans Special? Hallmark traits of the human body did not all arise anew in our species. Instead they emerged piecemeal in our forebears over millions of years. Many of these traits seem to have helped support two defining trends in our evolution: upright locomotion and tool use. Source: scientificamerican.com -- source link
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