WASHINGTON, DC - MARCH 11: The American Flag flies over the Senate side of the U.S. Capitol, as Senate Democrats speak nonstop on the chamber floor about climate change on March 11, 2014 in Washington, DC. The self-titled 'climate caucus', a group of 26 senators working with a parallel House caucus, started speaking in the evening on March 10th and plan to continue until the morning of March 11th in an effort to elevate the issue of global warming. (Photo by Mark Wilson/Getty Images)
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Getty Images News Mark Wilson