Environment

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** FILE ** Former U.S. Vice President Al Gore speaks in front of a poster for his documentary film on global warming, "An Inconvenient Truth," during the Japanese premier in Tokyo, In this Monday, Jan. 15, 2007 file photo. (Associated Press)

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Dave Dunlap watches from the bed of his truck as a wildfire crosses Black Forest Road near his home Tuesday afternoon, June 11, 2013, in Colorado Springs, Colo. The Black Forest Fire was one of at least three significant wildfires burning in Colorado amid gusty winds and record-breaking hot, dry weather. (AP Photo/The Colorado Springs Gazette, Christian Murdock)

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In this photo released by the Syrian official news agency SANA, Syrian army soldiers stand guard at a scene of two explosions in the central district of Marjeh, Damascus, Syria, Tuesday, June 11, 2013. State TV said the blasts were caused by suicide bombers, while activists said they were bombs planted there in advance. (AP Photo/SANA)

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**FILE** Citizens gather at a rally against federal legislation on climate change in Greeley, Colo., on Aug. 25, 2009. A billboard covered with signatures and topped with the words "Shame on you!" stood at the entrance of the event, organized by the American Petroleum Institute. The confluence of different interests has made Weld County a frequent stop for members of Congress interested in how the legislation is playing outside of Washington. (Associated Press)

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**FILE** Valley Meat Co. owner Rick De Los Santos stands April 15, 2013, in a corral area outside the former cattle slaughterhouse he has converted to a horse slaughter facility in Roswell, N.M. The plant — which has been waiting more than a year for federal approval of its operations — has become ground zero for an emotional, national debate over a return to domestic horse slaughter. (Associated Press)