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Researchers Track Humans to Common Ancestor

NPR's Robert Siegel speaks with science writer Steve Olson about his article in the current issue of the journal Nature. With professors Joseph Change and Douglas Rohde, Olson writes that a new statistical model shows that all human beings have a common ancestor, who lived just 3,500 years ago.

Copyright 2004 NPR

Prior to his retirement, Robert Siegel was the senior host of NPR's award-winning evening newsmagazine All Things Considered. With 40 years of experience working in radio news, Siegel hosted the country's most-listened-to, afternoon-drive-time news radio program and reported on stories and happenings all over the globe, and reported from a variety of locations across Europe, the Middle East, North Africa, and Asia. He signed off in his final broadcast of All Things Considered on January 5, 2018.