Keywords: Barack Obama greets Burton Richter and Mildred Dresselhaus (cropped).jpg en President Barack Obama greets recipients of the 2010 Fermi Award in the Oval Office May 7 2012 Participants include Energy Secretary Steven Chu and Dr John Holdren Director of the Office of Science and Technology Policy OSTP Official White House Photo by Pete Souza 2012-05-07 12 00 32 http //www flickr com/photos/whitehouse/7365530528/in/photostream Official White House Photo by Pete Souza other versions 1989 2015-03-10 PD-USGov Uploaded with UploadWizard Mildred Dresselhaus |