Photo: After Near Extinction, Humans Split Into Isolated Bands

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Bushmen, or San, wearing skins and carrying bows and arrows cross a salt pan in Namibia's Nyae Nyae Conservancy in a circa-2000 photo.

Genetic samples from southern Africa's Khoisan people, of which the Bushmen are a part, have supported previous evidence that early humans lived in small isolated groups for nearly a hundred thousand years, a new study says.

Photograph by Chris Johns/NGS

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