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Former Vice President Al Gore speaks about energy and the future, Thursday, July 17, 2008, at the Constitution Hall in NW Washington, D.C., Tuesday, July 15, 2008. During his speech, the Nobel Peace Prize winner issued a challenge that 100 percent of U.S. electricity production come from sources with zero carbon emissions within 10 years. (Astrid Riecken/The Washington Times)
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Former Vice President Al Gore speaks about energy and the future, Thursday, July 17, 2008, at the Constitution Hall in NW Washington, D.C., Tuesday, July 15, 2008. During his speech, the Nobel Peace Prize winner issued a challenge that 100 percent of U.S. electricity production come from sources with zero carbon emissions within 10 years. (Astrid Riecken/The Washington Times)