President Barack Obama walks with John P. Holdren, Assistant to the President for Science and Technology and Director of the White House Office of Science and Technology Policy, at the White House in ... more 
President Barack Obama walks with John P. Holdren, Assistant to the President for Science and Technology and Director of the White House Office of Science and Technology Policy, at the White House in Washington, Friday, March 7, 2014, before the president and first lady Michelle Obama boarded the Marine One helicopter to start a trip to Miami, Florida to visit Coral Reef High School. (AP Photo/Charles Dharapak) less 
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Associated Press | Photo By Charles Dharapak
Fri, Mar 7, 2014 11:33 AM EST