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Chris Stringer

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Origins of Modern Humans
Chris Stringer, Natural History Museum London
Human evolution can be divided into two main phases: a prehuman phase in Africa prior to two million years ago where walking upright had evolved but many other characteristics were still essentially ape-like, and a human phase with an increase in both brain size and behavioral complexity and an expansion from Africa. Evidence points strongly to Africa as the major center for the genetic, physical, and behavioral origins of both ancient and modern humans, but new discoveries are prompting a rethink of some aspects of our evolutionary origins, including the likelihood of interbreeding between archaic humans (for example the Neanderthals) and modern humans.

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20120202 IHO Chris Stringer
Origins of Modern Humans<br /> Chris Stringer, Natural History Museum London<br /> Human evolution can be divided into two main phases: a prehuman phase in Africa prior to two million years ago where walking upright had evolved but many other characteristics were still essentially ape-like, and a human phase with an increase in both brain size and behavioral complexity and an expansion from Africa. Evidence points strongly to Africa as the major center for the genetic, physical, and behavioral origins of both ancient and modern humans, but new discoveries are prompting a rethink of some aspects of our evolutionary origins, including the likelihood of interbreeding between archaic humans (for example the Neanderthals) and modern humans.