Environment

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Couples compete during the 2012 Tango Dance World Cup in Buenos Aires, Argentina. (AP Photo/Natacha Pisarenko)

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Dancers get ready backstage before competing during the 2012 Tango Dance World Cup in Buenos Aires, Argentina, Monday, Aug. 20, 2012. (AP Photo/Natacha Pisarenko)

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A dancer combs his hair before a mirror before competing during the 2012 Tango Dance World Cup in Buenos Aires, Argentina, Monday, Aug. 20, 2012. (AP Photo/Natacha Pisarenko)

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Japanese activists hold national flags Sunday on Uotsuri island, one of the islands of Senkaku in Japanese and Diaoyu in Chinese in East China Sea. Japan’s coast guard says Uotsuri island is one of a group of islands at the center of an escalating territorial dispute with China. (Kyodo News via Associated Press)

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Anti-Japan protesters march Sunday in China. Japanese activists swam ashore and raised flags Sunday on an island claimed by both Japan and China. (Associated Press)

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**FILE** A firefighter walks along a burnout line along a large wildfire in the Gila National Forest in New Mexico on May 29, 2012. (Associated Press/U.S. Forest Service)

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Richard "Bo" Bolton, a timber feller from Burney, Calif., cuts down trees burned in the Reading Fire along Highway 89 in Lassen National Park on Friday, Aug. 17, 2012. The National Park Service is felling trees that burned in the fire to prepare the road for possible reopening this weekend. (AP Photo/Andreas Fuhrmann, Record Searchlight)

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** FILE ** Vendors that were caught unprepared try to recover their chairs after high waves dragged their beach stalls into the sea in Veracruz, Mexico, Thursday, Aug. 9, 2012. Tropical Storm Ernesto headed into Mexico's southern Gulf coast as authorities in the flood-prone region prepared shelters, army troops and rescue personnel for drenching rains. (AP Photo/Felix Marquez)

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David Powell, of the West Virginia Irish Road Bowling Association, stands astride a bowling “lane” at the North American region finals at a state forest near Bruceton Mills, W.Va. (Associated Press)