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On May 5 famed paleoanthropologists Donald Johanson and Richard Leakey convened at the American Museum of Natural History in New York City to discuss human origins. It is the first time Leakey and Johanson--longtime rivals--have shared a stage since a public falling out in 1981. Viewers in the live audience and those who tuned in to the webcast tweeted the discussion and uploaded photos to Facebook, so I decided to use Storify to document this historic event.

Paleoanthropology is a discipline known as much for its feuds as for its findings. Among the best known of these clashes is a longstanding one between two of the field's most famous scientists, Donald Johanson and Richard Leakey