President Barack Obama greets the 2010 PECASE recipients in the East Room of the White House, Oct. 14, 2011.  (Official White House Photo by Pete Souza) This photograph is provided by THE WHITE HOUSE as a courtesy and may be printed by the subject(s) in the photograph for personal use only. The photograph may not be manipulated in any way and may not otherwise be reproduced, disseminated or broadcast, without the written permission of the White House Photo Office. This photograph may not be used in any commercial or political materials, advertisements, emails, products, promotions that in any way suggests approval or endorsement of the President, the First Family, or the White House.

Photo with Dr. John P. Holdren (right), the President’s science and technology advisor and director of the White House Office of Science and Technology Policy, and Dr. Joan Ferrini-Mundy (left), assistant director for Education and Human Resources at the National Science Foundation. Photo Credit NASA/Paul E. Alers.