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Photos: Peering into energy's future

March 7, 2008 4:00 AM PST

At the WIREC conference, delegates of various countries made pledges to boost use of renewable energy. The U.S. government, the largest single energy consumer in the world, pledged that 7.5 percent of its electric-energy use will come from renewable resources by 2013.

Photo by Martin LaMonica/CNET Networks

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