President Barack Obama talks with the Presidential Early Career Award for Scientists and Engineers (PECASE) recipients in the East Room of the White House, April 14, 2014. (Official White House Photo by Pete Souza)

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President Barack Obama talks with the Presidential Early Career Award for Scientists and Engineers (PECASE) recipients in the East Room of the White House, April 14, 2014. (Official White House Photo by Pete Souza)
President Barack Obama talks with the Presidential Early Career Award for Scientists and Engineers (PECASE) recipients in the East Room of the White House, April 14, 2014.  (Official White House Photo by Pete Souza)

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