Children in a Lahore slum after heavy rains. The slum has a large population of Pashtuns who came from Pakistan's lawless tribal regions; many carry the polio virus with them. Jackie Northam/NPR hide caption

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A demonstrator reacts after Pakistani policemen fire tear gas during a protest against power cuts in Karachi in June. Pakistan suffers from a massive energy crisis, one of several factors contributing to the country's severe economic troubles. Rizwan Tabassum/AFP/Getty Images hide caption

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Ghulam Ahmed Bilour, Pakistan's railways minister, has offered $100,000 for the death of a filmmaker who produced an anti-Islam movie. He says it's the "only way" to stop insults to the Prophet Muhammad. Aamir Qureshi/AFP/Getty Images hide caption

itoggle caption Aamir Qureshi/AFP/Getty Images

Abdul Qadeer Khan, regarded as the father of Pakistan's nuclear bomb, shakes hands with supporters at the Rawalpindi High Court in 2010. The controversial Khan, who sold nuclear secrets to Iran and North Korea, is now entering politics. Behrouz Mehri/AFP/Getty Images hide caption

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Tiny Grindstone Island has only one official cemetery. Jackie Northam/NPR hide caption

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Anti-nuclear protesters carry "No nukes" banners during a march in Tokyo last month. Protests against Japan's use of nuclear power have grown in the aftermath of the March 2011 Fukushima disaster. Koji Sasahara/AP hide caption

itoggle caption Koji Sasahara/AP