The Journey of Man: A Genetic Odyssey

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By analyzing DNA from people in all regions of the world, geneticist Spencer Wells has concluded that all humans alive today are descended from a single man who lived in Africa around 60,000 years ago.

Modern humans, he contends, didn’t start their spread across the globe until after that time. Most archaeologists would say the exodus began 100,000 years ago—a 40,000-year discrepancy. Wells’s take on the origins of modern humans and how they came to populate the rest of the planet is bound to be controversial.

His work adds to an already crowded field of opposing hypotheses proposed by those who seek answers in “stones and bones”—archaeologists and paleoanthropologists—and those who seek them in our blood—population geneticists and molecular biologists.

Over the last decade, major debate on whether early humans evolved in Africa or elsewhere, when they began outward migration, where they went, and whether they interbred with or replaced archaic species has moved out of scientific journals and into the public consciousness.

In this documentary, Wells addresses these issues. In a straightforward story, he explains how he traced the exodus of modern humans from Africa by analyzing genetic changes in DNA from the y-chromosome.

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  • 2ofnine

    Well, the continent is wrong, and the time is inaccurate, but otherwise this is exactly what the Bible has said for several thousand years! We all do come from one man!

    • Professor Fondle

      Can’t really comment on the content as playback froze before the end.

    • Professor Fondle

      Can’t really comment on the content as playback froze before the end.

    • Globalblonde

      snap-out-the-stupid-  the bible had nothing to do with the beginnings of man.   that is a little little story-  a cautionary tale, for man-  who previously, had not the ability to understand what we know now..

      • chip griffin

        always a dead man to mock our way…

  • Rock Tweet

    Bloody fucking Megavideo.

  • Rock Tweet

    Bloody fucking Megavideo.

  • ruby

    what a fascinating topic yet the host is boring and has no charisma whatsoever… arghhhghg

  • Ruby

    ha and how many times does he mention stanford uni?