Share

Barack Obama

|
Photo - <p>President Barack Obama walks out to the East Garden of the White House in Washington to hosts the White House Science Fair, Monday, April 22, 2013. (AP Photo/Pablo Martinez Monsivais)</p>

President Barack Obama walks out to the East Garden of the White House in Washington to hosts the White House Science Fair, Monday, April 22, 2013. (AP Photo/Pablo Martinez Monsivais)

News,Science and Technology

President Barack Obama walks out to the East Garden of the White House in Washington to hosts the White House Science Fair, Monday, April 22, 2013. (AP Photo/Pablo Martinez Monsivais)

View article comments Leave a comment