Environment

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Republican presidential candidate Mitt Romney greets supporters Oct. 24, 2012, at an election campaign rally at the Reno Event Center in Reno, Nev. (Associated Press)

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U.N. Secretary-General Ban Ki-moon dances Gangnam style with rapper Psy at U.N. headquarters in New York. “Until two days ago someone told me I am the most famous Korean in the world,” Mr. Ban said. “Now I have to relinquish.” (United Nations via Associated Press)

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**FILE** Buildings and palm trees are reflected on the entrance of the Countrywide Financial Corp. office in Beverly Hills, Calif., on June 25, 2008. (Associated Press)

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The Marine One helicopter, with President Obama aboard, lifts Oct. 23, 2012, from the South Lawn of the White House in Washington, Wednesday, en route to Andrews Air Force Base, Md., then onto campaign events in Iowa, Colorado, California and Nevada. (Associated Press)

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President Obama walks from the White House to Marine One on Oct. 24, 2012, en route to Andrews Air Force Base, Md., then onto campaign events in Iowa, Colorado, California and Nevada. (Associated Press)

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**FILE** A Guatemalan river-raft worker steers a group of Central American migrants journeying north to the U.S., across the Suchiate river on a makeshift raft at the Guatemala-Mexico border crossing in Tecun Uman, Guatemala, on Sept. 28, 2012. (Associated Press)

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Workers at the Ford plant in Genk, Belgium, react on Wednesday, Oct. 24, 2012, after the European Ford management announced it will close the plant at the end of 2014 — a move that will result in 4,500 direct job losses and 5,000 more among subcontractors. (Associated Press)

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Workers at the Ford plant in Genk, Belgium, react on Wednesday, Oct. 24, 2012, after the European Ford management announced it would close the plant at the end of 2014 — a move that will result in 4,500 direct job losses and 5,000 more among subcontractors. (Associated Press)

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Workers at the Ford plant in Genk, Belgium, react on Wednesday, Oct. 24, 2012, after the European Ford management announced it will close the plant at the end of 2014 — a move that will result in 4,500 direct job losses and 5,000 more among subcontractors. (Associated Press)

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Workers embrace at the Ford plant in Genk, Belgium, on Wednesday, Oct. 24, 2012, after the European Ford management announced it will close the plant at the end of 2014 — a move that will result in 4,500 direct job losses and 5,000 more among subcontractors. (Associated Press)

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Workers at the Ford plant in Genk, Belgium, react on Wednesday, Oct. 24, 2012, after the European Ford management announced it will close the plant at the end of 2014 — a move that will result in 4,500 direct job losses and 5,000 more among subcontractors. (Associated Press)

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Workers at the Ford plant in Genk, Belgium, react on Wednesday, Oct. 24, 2012, after the European Ford management announced it will close the plant at the end of 2014 — a move that will result in 4,500 direct job losses and 5,000 more among subcontractors. (Associated Press)

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A worker (center) at the Ford plant in Genk, Belgium, smashes a plaque containing the company's mission statement with a shovel while another worker looks on, on Wednesday, Oct. 24, 2012, in front of the factory. The European Ford management announced it will close the plant at the end of 2014 — a move that will result in 4,500 direct job losses and 5,000 more among subcontractors. (Associated Press)

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A worker at the Ford plant in Genk, Belgium, reacts on Wednesday, Oct. 24, 2012, after the European Ford management announced it will close the plant at the end of 2014 — a move that will result in 4,500 direct job losses and 5,000 more among subcontractors. (Associated Press)

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A worker at the Ford plant in Genk, Belgium, reacts on Wednesday, Oct. 24, 2012, after the European Ford management announced it would close the plant at the end of 2014 — a move that will result in 4,500 direct job losses and 5,000 more among subcontractors. (Associated Press)

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President Barack Obama walks across the South Lawn to the White House from Marine One, Tuesday, Oct. 23, 2012, in Washington. (AP Photo/Carolyn Kaster)