Louise Leakey asks, “Who are we?” The question takes her to the Rift Valley in Eastern Africa, where she digs for the evolutionary origins of humankind — and suggests a stunning new vision of our competing ancestors. (Recorded February 2008 in Monterey, California. Duration: 15:35.)
Watch Louise Leakey’s 2008 talk on TED.com, where you can download it, rate it, comment on it and find other talks and performances.
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