Environment

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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)

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Russian President Vladimir Putin flies in a motorized hang glider alongside two Siberian white cranes on Siberia’s Yamal Peninsula. His flight was part of an effort to teach the endangered birds, raised in captivity, to follow the craft to their southern migration route to Central Asia. (Associated Press)