How old is the human species really?

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Reporter Pallab Ghosh tells presenter Roland Pease that the oldest Homo sapiens fossils have been unearthed at Jebel Irhoud in Morocco, and what that means for our understanding of human evolution. (Picture: The mandible Irhoud 11 is the first, almost complete adult mandible discovered at the site of Jebel Irhoud. Credit: Jean-Jacques Hublin, MPI-EVA, Leipzig)