President Barack Obama talks with Anand Srinivasan, 15, in the Blue Room, Feb. 7, 2012, during the second annual White House Science Fair celebrating student winners of science, technology, engineering, and math (STEM) competitions from across the country. Srinivasan, a sophomore from Roswell High School in Roswell, Ga., was a finalist in the Google Science Fair for his project, which examines the use of electroencephalography (EEG) and prosthetic technology to make a more functional artificial limb. (Official White House Photo by Pete Souza)