走向世界：人类走出非洲的真实历程

What really happened when ancient humans migrated out of Africa, asks Michael Marshall T HE great out-of-Africa migration is one of the canonical events in the human evolutionary story. Our species arises in Africa, becomes dominant, then, around 60,000 years ago, ventures beyond it to conquer every continent (bar Antarctica) – leaving every other hominin species in the dust. We know that some version of this is true, thanks to genetics. African populations have more genetic diversity than any others, by far. European, Japanese, Indigenous Australian and Indigenous American peoples may look different, but genetically these groups are quite alike, while even neighbouring groups in Africa can be more distinct genetically. …