One African Tribe Populated Rest of the World

The entire human race outside Africa owes its existence to the survival of a single tribe of around 200 people who crossed the Red Sea 70,000 years ago, scientists have discovered. While there are 14 ancestral populations in Africa itself, just one seems to have survived outside of the continent.

The earliest human remains found outside of Africa were discovered in Palestine and are thought to be around 100,000 years old. They are remains of a group that left Africa through what is now the Sahara desert during a brief period when the climate grew wetter, turning the desert green with vegetation. This excursion, however, failed and the population died out when the climate started to dry out again.

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