Solar Decathlon-Winners of The Communications Contest » Solar Decathlon 2011
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14-month-old Graysen Black, the son of an organizer, gets a preview tour after the opening ceremony of the U.S. Department of Energy Solar Decathlon in Washington, D.C., Thursday, Sept. 22, 2011. (Credit: Stefano Paltera/U.S. Department of Energy Solar Decathlon)
