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Senate Environment and Public Works Committee investigates Global Warming in Washington

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Senate Environment and Public Works Committee investigates Global Warming in Washington
From left to right, Energy Secretary Steven Chu, Environmental Protection Agency Administrator Lisa Jackson and Agriculture Secretary Tom Vilsack testify during a Senate Environment and Public Works Committee hearing on a clean energy economy and reducing global warming pollution in Washington on July 7, 2009. (UPI Photo/Kevin Dietsch)
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