President Barack Obama views science exhibits during the 2015 White House Science Fair celebrating student winners of a broad range of science, technology, engineering, and math (STEM) competitions, in the Red Room, March 23, 2015. The President talks with Emily Bergenroth, Alicia Cutter, Karissa Cheng, Addy O'Neal, and Emery Dodson, all six-year-old Girl Scouts, from Tulsa, Oklahoma. They used Lego pieces and designed a battery-powered page turner to help people who are paralyzed or have arthritis. (Official White House Photo by Chuck Kennedy)
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