US President Barack Obama speaks about the White House Science Fair in the East Room of the White House in Washington, DC, February 7, 2012, following a tour of the exhibits with students from around the US. Obama announced new policies to recruit and support science, technology, engineering and math (STEM) teacher programs, including requesting $80 million in his upcoming budget for teacher preparation, with the goal of training one million additional STEM students over the next decade. AFP PHOTO / Saul LOEB (Photo credit should read SAUL LOEB/AFP/Getty Images)