South Sudanese women carry cans filled with water on their heads at Terekeka, north of Juba. Many southerners say they plan to vote for independence next year. Tony Karumba/AFP/Getty Images hide caption

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This colorized image shows part of the Ebola virus. The often-fatal Ebola hemorrhagic fever has appeared sporadically since its initial recognition in 1976. Frederick Murphy/CDC hide caption

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When Chris Abani was a boy, he toured the Nigerian countryside as an interpreter for his mother, Daphne Mae Hunt, who wanted to teach women about their menstrual cycles as a form of birth control. Courtesy Chris Abani hide caption

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An armed pirate on the Somali coast watches a Greek cargo ship in January. AFP/Getty Images hide caption

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A suspected pirate from Somalia looks around as he is escorted into federal court by U.S. marshals in Norfolk, Va., on Friday. A group of 11 suspected pirates were due to be arraigned and tried in the Norfolk federal court. Steve Helber/AP hide caption

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