The 2009 Solar Decathlon Heats Up the Mall
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The 2009 Solar Decathlon Heats Up the Mall

For the U.S. Department of Energy's Solar Decathlon, homes designed and built by 20 teams of college students for the event's 10 competitions offer ideas on designing with solar panels, rain-catching systems, sustainable materials and more on the National Mall beginning Wednesday. (Anna Uhls/The Washington Post)

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