A man cleans up the site of Tuesday's car bomb explosion in Jos, Nigeria, on Thursday. The city was spared deadly reprisals, in part because a peace group intervened. Sunday Alamba/AP hide caption

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Fishermen drag a net in Lake Malawi in 2012. About the size of New Jersey, the lake is home to hundreds of fish species and is considered one of the most biologically diverse lakes in the world. Ding Haitao/Xinhua/Landov hide caption

itoggle caption Ding Haitao/Xinhua/Landov

Over the next few years China will build a multi-billion dollar railway linking the Kenyan port of Mombasa to Nairobi (shown here), based on an agreement signed earlier this month by East African and Chinese officials. It's one of many examples of China's increasing economic engagement with African countries. Tony Karumba/AFP/Getty Images hide caption

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Nigeria's chief of defense staff Air Marshal Alex S. Badeh speaks during a demonstration in Abuja calling for the rescue of girls kidnapped from their school in Chibok. Badeh says the government knows where the girls are — but that a rescue attempt would endanger their lives. Gbenga Olamikan/AP hide caption

itoggle caption Gbenga Olamikan/AP

Participants of the Diplomatic Culinary Partnership try different foods at the State Department in Washington during a gathering of the American Chef Corps, a network of chefs from across the U.S. Jewel Samad/AFP/Getty Images hide caption

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