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Energy Efficient Lighting Options | by Dept of Energy Solar Decathlon
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Energy Efficient Lighting Options

The public learns about energy efficient light bulb options in the exhibit tent at the U.S. Department of Energy Solar Decathlon 2011 at West Potomac Park in Washington, D.C., Thursday, Sept. 29, 2011. (Credit: Stefano Paltera/U.S. Department of Energy Solar Decathlon)

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Taken on September 29, 2011