What's the median age in Africa? To find out, take our quiz. Above: Crowds wait for a festival in Maiduguri. Bonus question: Where is Maiduguri? Answer: It's the capital of Boron State in northeastern Nigeria. Tim Graham/Tim Graham/Getty Images hide caption

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Nialina Ba holds the only picture she has of her late husband, Bourang Ba (in the white shirt). Ofeibea Quist-Arcton/NPR hide caption

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Why The Villages Are Losing Their Young Men

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Aissatou Sanogo and her late husband, Souleymane Diaby. Ofeibea Quist-Arcton/NPR hide caption

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She Told Her Husband She Didn't Want Him To Leave For Europe

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Paul Zakayo (left) and Nasa Jackson Mairi were nabbed by a team of park rangers at the Mara Conservancy in Kenya and charged with killing three impalas and a gazelle in the wildlife sanctuary. Greg Warner/NPR hide caption

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Stalking Poachers With High-Tech Cameras And Old-Fashioned Smarts

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Morocco's King Mohammed VI, shown here in November 2015, introduced changes two years ago that have allowed more than 20,000 sub-Saharan Africans to settle in the country. Such a policy is extremely rare in the Arab world. Abdeljalil Bounhar/AP hide caption

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Morocco, Long A Stopover For African Migrants, Becomes A Destination

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Emmanuel Baziruwile, 54, works at a coffee plantation in Cyimbiri, Rwanda. Erika Beras for NPR hide caption

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Rwanda Tries To Persuade Its Citizens To Drink The Coffee They Grow

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Hissene Habre, the former president of Chad, waves as he leaves a courthouse in Dakar, Senegal, on June 3. Habre was ousted from Chad in 1990 and has lived in exile in Senegal ever since. He was arrested in 2013 and is now on trial for charges that include torture, war crimes and crimes against humanity. Seyllou/AFP/Getty Images hide caption

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An Ex-Dictator Faces Trial — But Not In The Country He Ruled

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