Vampire bats are common in Central and South America, where they feed on livestock and sometimes people. Michael & Patricia Fogden/Corbis hide caption

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Dan Senor, senior national security aide to Mitt Romney, speaks to the press en route to Israel from London on Saturday. Jason Reed/Reuters /Landov hide caption

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Russian protest leader Alexei Navalny speaks to the media as he arrives for questioning at the headquarters of the Russian Investigation committee in Moscow on Monday. Misha Japaridze/AP hide caption

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India's electric system is under constant stress and blackouts are common. Elliot Hannon was on the streets of New Delhi when power went out Tuesday, but he didn't realize there was an outage until later. Sajjad Hussain/AFP/Getty Images hide caption

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Britain's Bradley Wiggins celebrates after winning the gold medal at the end of the London 2012 Olympic Games men's individual time trial road cycling event in London. Odd Andersen/AFP/Getty Images hide caption

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A soldier wears a button bearing the image of coup leader Capt. Amadou Haya Sanogo with the words 'President, CNRDRE,' the French acronym of the ruling junta, as he stands guard at junta headquarters in Kati, outside Bamako, Mali. Rebecca Blackwell/AP hide caption

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Mitt Romney speaks in Jerusalem on Sunday, backing "any and all measures" to keep Iran from developing nuclear weapons. Uriel Sinai/Getty Images hide caption

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Cuban performers ranging from dancers to opera singers were packing in audiences at Havana's El Cabildo restaurant and cabaret. In a case seen as a test of Raul Castro's commitment to economic changes, government inspectors recently closed the restaurant. Desmond Boylan/Reuters /Landov hide caption

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A Bhutanese farmer puts her harvest of chilies on the roof of a shed to dry and protect it from wild boars, deer, and monkeys in 2006. James L. Stanfield/National Geographic/Getty Images hide caption

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U.S. investigators allege that Afghan Gen. Ahmad Zia Yaftali stole tens of millions of dollars' worth of medicine from the Mohammad Daud Khan military hospital in Kabul. He has been removed from that post, but has not been prosecuted. He's shown here at the hospital on Dec. 18, 2010. Altaf Qadri/AP hide caption

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