Sarah Obama, left, and her translator, Mama Sarah Obama Foundation Executive Director Debra Akello, spoke at the United Nations on Wednesday. Bebeto Matthews/AP hide caption

itoggle caption Bebeto Matthews/AP

Kenya's Dennis Kimetto crosses the finish line to win the Berlin Marathon Sunday. Kimetto set a new world marathon record, breaking the 2 hour, 3 minute mark for the first time. Tobias Schwarz/AFP/Getty Images hide caption

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Kenyan police confront university students protesting higher fees on May 20. The police have a reputation for corruption and violence and are not well-liked. But when a popular officer was arrested and charged with a vigilante-style killing, residents took to the streets to support him. Tom Maruko/Barcroft Media/Landov hide caption

itoggle caption Tom Maruko/Barcroft Media/Landov

Satao was a 45-year-old Kenyan elephant with tusks so long they brushed the ground. Poachers killed him in June with a poisoned arrow. African leaders gathered in Washington said there needs to be better cooperation on the continent to prevent poaching. Tsavo Trust hide caption

itoggle caption Tsavo Trust

Kenyan writer Binyavanga Wainaina, one of Africa's leading literary figures, publicly declared his homosexuality in an online essay last weekend. In an interview with NPR's Tell Me More, he said the recent anti-gay legislation in Africa influenced his decision to come out. He's shown here after giving a television interview in Nairobi on Wednesday. AP/Ben Curtis hide caption

itoggle caption AP/Ben Curtis

When Benta Odeny was diagnosed with HIV, she started to protect her husband Daniel from the virus by taking antiretroviral medications. The same drugs also helped her give birth to an HIV-negative daughter, Angelia. Gregory Warner/NPR hide caption

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Video footage shows what appears to be Kenyan soldiers carrying plastic shopping bags as they leave a supermarket at Westgate Mall during a terrorist attack in Nairobi on Sept. 21. Kenya's security forces have long been rated as among the most corrupt institutions in the country, but even jaded Kenyans were shocked by the CCTV footage. Reuters /Landov hide caption

itoggle caption Reuters /Landov

Runners train in Ngong, Kenya, in 2012. The country has produced the world's best distance runners for decades, and most belong to the Kalenjin people. Michael Steele/Getty Images hide caption

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Libyan Prime Minister Ali Zeidan speaks to the media during a news conference in Rabat, Morocco, on Tuesday, where he talked about the U.S. action to nab an al-Qaida operative in Tripoli. Abdeljalil Bounhar/AP hide caption

itoggle caption Abdeljalil Bounhar/AP

The upper parking lot entrance to the Westgate Mall is seen above vehicles that plunged during the collapse of the upper level. Kenyan officials are urging patience with the pace of the flow of information about the attack. Ben Curtis/AP hide caption

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Shinichi Kuramoto of the Center for Deep Earth Exploration in Japan displays a replica of earthquake fault rock. TOSHIFUMI KITAMURA/AFP/Getty Images hide caption

itoggle caption TOSHIFUMI KITAMURA/AFP/Getty Images

Friends and relatives of Mbugua Mwangi and his fiancee Rosemary Wahito attended their funeral service Friday in Nairobi, Kenya. Mwangi, who was Kenyan President Uhuru Kenyatta's nephew, and Wahito died in the Westgate Mall attack. Jerome Delay/AP hide caption

itoggle caption Jerome Delay/AP