Environment

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Sugar Land Skeeters starter Roger Clemens warms up before a minor league baseball game against the Long Island Ducks at Constellation Field Friday, Sept. 7, 2012, in Sugar Land, Texas. (AP Photo/Houston Chronicle, Brett Coomer) MANDATORY CREDIT

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Residents take photos of a flooded area after dikes on the Salmon River gave way in Truro, Nova Scotia, on Monday, Sept. 10, 2012. (AP Photo/The Canadian Press, Andrew Vaughan)

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A sign in Buenos Aires shows the exchange rate last week for the Argentine peso, which is declining rapidly. It has lost nearly 8 percent of its value against the dollar this year, more than in all of last year.

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A Buenos Aires travel agency quotes prices for trips to Bogota, Columbia, and Cusco, Peru, in Argentine pesos. To keep dollars in the country, the government has placed stringent restrictions on the amount of dollars that can be taken out and increased taxes on foreign credit or debit card purchases. (Associated Press)

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Yukiya Amano, head of the International Atomic Energy Agency (IAEA), addresses the media during a news conference after a meeting of the IAEA board of governors at the International Center in Vienna on Sept. 10, 2012. (Associated Press)

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Iraqi Vice President Tariq al-Hashemi speaks to the media during a news conference in Ankara, Turkey, on Monday, Sept. 10, 2012. (AP Photo/Burhan Ozbilici)

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**FILE** The survey ship Koyo Maru (left), chartered by Tokyo city officials, sails around Minamikojima (foreground), Kitakojima (middle right) and Uotsuri (background) — the tiny islands in the East China Sea called Senkaku in Japanese and Diaoyu in Chinese — on Sept. 2, 2012. (Associated Press/Kyodo News)

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President Bush’s ambitious January 2004 vision for space exploration has been swallowed up by a budgetary black hole. (The Washington Times)

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President Obama, who visited the Kennedy Space Center in Cape Canaveral, Fla., in April 2010, subsequently said, “By the mid-2030s, I believe, we can send humans to orbit Mars and return them safely to Earth. And a landing on Mars will follow. And I expect to be around to see it.” (Associated Press)

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associated press Louisiana Monroe quarterback Kolton Browning (center) celebrates with teammates after rallying the Warhawks from a 28-7 deficit to a 34-31 overtime victory over Arkansas. Next up for the Razorbacks is a visit from SEC power Alabama.

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In this photo provided by China's Xinhua News Agency, damaged cars are seen in Luozehe town, Yiliang County, southwest China's Yunnan Province, Friday, Sept. 7, 2012. A series of earthquakes collapsed houses and triggered landslides in a remote mountainous part of southwestern China on Friday, killing dozens of people with the toll expected to rise. (AP Photo/Xinhua, Zhou Hongpeng)