White House Office of Science and Technology Policy Director John Holdren testifies before the House Science, Space and Technology Committee during a hearing in the Rayburn House Office Building on Capitol Hill March 19, 2013 in Washington, DC. The committee asked government and military experts about efforts to track and mitigate asteroids, meteors and other 'near-Earth objects.'
{"Image ImageDescription": "WASHINGTON, DC - MARCH 19:  White House Office of Science and Technology Policy Director John Holdren testifies before the House Science, Space and Technology Committee during a hearing in the Rayburn House Office Building on Capitol Hill March 19, 2013 in Washington, DC. The committee asked government and military experts about efforts to track and mitigate asteroids, meteors and other \"near-Earth objects.\"  (Photo by Chip Somodevilla/Getty Images)", "Image Copyright": "2013 Getty Images"}