Manny Pacquiao answers questions May 2 during a news conference following his welterweight title fight against Floyd Mayweather Jr. in Las Vegas. Pacquiao could face disciplinary action from Nevada boxing officials for failing to disclose a shoulder injury before the fight. John Locher/AP hide caption

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Protesters gather April 30 outside Puerto Rico's Capitol building in San Juan to oppose Gov. Alejandro Garcia Padilla's budget proposal. The plan would raise taxes to help cover the state's massive debt. Ricardo Arduengo/AP hide caption

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Kathmandu Living Labs' earthquake site collects data about conditions and needs. Each blue dot represents the number of reports of help wanted — medical, food, water or shelter — near Kathmandu. Kathmandu Living Labs hide caption

itoggle caption Kathmandu Living Labs

Canadian-born Omar Khadr is seen in a courtroom sketch during a 2010 hearing at the U.S. military prison at Guantanamo Bay, Cuba. He was moved to a Canadian prison in 2012. Janet Hamlin/AP hide caption

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Venezuelan comedian Laureano Marquez performs a stand-up routine at a theater in Caracas last year. Marquez says the government is now cracking down on comedians who make jokes about the government and the country's economic problems. Christian Veron/Reuters/Landov hide caption

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Far more than other Western democracies, Britain concentrates its money, power and culture in the capital, London. Elwin van Eede/Flickr hide caption

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An airport official walks past a military aircraft destroyed by Saudi-led airstrikes, at the Sanaa International airport in Yemen on Tuesday. Destroyed runways prevent aid from being delivered. Hani Mohammed/AP hide caption

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Now that's a big root: Sweet potatoes aren't tubers, or thickened stems, like potatoes. Sweet potatoes are roots — swollen and packed with starch. U-ichiro Murakami/Flickr.com hide caption

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