WASHINGTON, DC – FEBRUARY 07: (AFP OUT) U.S. President Barack Obama (2R) discusses a lightweight portable disaster relief shelter designed by Jessica D’Esposito (R), Colton Newton (2L) and Anna Woolery from Petersburg, Indiana, representing the Pike Central High School InvenTeam, while touring student science fair projects on exhibit in the State Dining Room at the White House February 7, 2012 in Washington, DC. Obama hosted the second White House Science Fair celebrating the student winners of science, technology, engineering and math (STEM) competitions from across the country. (Photo by Molly Riley-Pool/Getty Images)