Article: How old is humanity, and where did 'Homo sapiens' come from? ; The big question

Why are we asking this question now?

A new study was published yesterday that purports to "prove" the theory that humans evolved from a single origin somewhere in sub- Saharan Africa. It seems to answer two of the biggest questions in human evolution - where we came from and when we began to spread across the world. The answer appears to be that we came out of Africa about 55,000 years ago. The study supports the idea that we derive from an ancestral stock of people who had already been living in Africa as an independent species for about 150,000 years before some began the global migration that led to man's dominance of the planet.

Who did this latest study and what did it involve?

The ...

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