Tracing our human past in Africa
Beginning about 300,000 years ago, people in Africa who looked like us – the earliest anatomically modern humans – also started behaving in ways that seem very human. They made new kinds of stone tools and began transporting raw materials up to 250 miles (400 kilometres), likely through trade networks. By 140,000-120,000 years ago, people made clothing from animal skins and began to decorate themselves with pierced marine shell beads.
Despite being separated by thousands of miles and years, all the ancient individuals in this study were descended from the same three populations related to ancient and present-day eastern, southern and central Africans. The presence of eastern African ancestry as far south as Zambia, and southern African ancestry as far north as Kenya, indicates that people were moving long distances and having children with people located far away from where they were born. The only way this population structure could have emerged is if people were moving long distances over many millennia.
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