U.S. President Barack Obama presents the Medal of Freedom to physicist Mildred Dresselhaus during a

U.S. President Barack Obama presents the Medal of Freedom to physicist Mildred Dresselhaus during a ceremony in the East Room of the White House on Monday, Nov. 24, 2014, in Washington, D.C. The Medal of Freedom is the country's highest civilian honor. (Olivier Douliery/Abaca Press/TNS) ORG XMIT: 1160540
Olivier Douliery / TNS
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