President Barack Obama, listens to, from left, Evan Jackson, 10, Alec Jackson, 8, and Caleb Robinson, 8, all from McDonough, Georgia, as they explain their 'COOL PADS', a cooling system

 

              President Barack Obama, listens to, from left, Evan Jackson, 10, Alec Jackson, 8, and Caleb Robinson, 8, all from McDonough, Georgia, as they explain their
President Barack Obama, listens to, from left, Evan Jackson, 10, Alec Jackson, 8, and Caleb Robinson, 8, all from McDonough, Georgia, as they explain their 'COOL PADS', a cooling system in football shoulder pads that keep players safe from overheating, Monday, April 22, 2013, at the White House Science Fair event in the State Dinning Room of the White House in Washington. (AP Photo/Pablo Martinez Monsivais)