A boy with multiple Guinea worms sits outside a containment center in northern Ghana, February 2007. Wes Pope/Chicago Tribune/MCT /Landov hide caption

itoggle caption Wes Pope/Chicago Tribune/MCT /Landov

Algerian men look at national newspapers headlining the terrorist attack and kidnapping in Amenas at a news stand in Algiers on Thursday. Ouahab Hebbat/AP hide caption

itoggle caption Ouahab Hebbat/AP

Kenyan Susan Oguya created an app to help farmers in her homeland. Shown here in the office of her company, M-Farm, she also belongs to the group Akirachix, which seeks to bring more Kenyan women into the tech world. Gregory Warner hide caption

itoggle caption Gregory Warner

Women wait in line outside a polling station to vote on a disputed constitution drafted by Islamist supporters of President Mohammed Morsi in Cairo on Saturday. Amr Nabil/AP hide caption

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Zakale Creations is a jewelry-designing operation that employs 30 young people who were previously involved in crime. The Nairobi-based operation is the brainchild of John Mucheru, himself a former mugger. John Burnett/NPR hide caption

itoggle caption John Burnett/NPR

Miles Lappeman (left) and his son Marc with the carcass of a rhino that was killed for its horn at their Finfoot Lake Reserve on Nov. 24 in South Africa. This was one of eight rhinos slaughtered by poachers. Nicolene Olckers/Foto24/Gallo Images/Getty Images hide caption

itoggle caption Nicolene Olckers/Foto24/Gallo Images/Getty Images

Sept. 11, 2012: A blaze erupted during the attack on the U.S. consulate in Benghazi, Libya. AFP/Getty Images hide caption

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Dr. Vanessa Kerry talks with her father, Sen. John Kerry, before he delivers a speech on health care in Boston. Chitose Suzuki/AP hide caption

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Ayo Bello grabs a box of malaria medication at a pharmacy in Lagos, Nigeria. A pilot project by the Global Fund has helped private pharmacies and clinics sell top quality malaria drugs at wholesale prices in Nigeria and seven other African countries. Sunday Alamba/Associated Press hide caption

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A piece of red ochre with a deliberately engraved design is pictured here at Cape Town's Iziko/South African Museum in 2002. The piece was discovered in Blombos Cave near Stilbaai, about 300 kilometers from Cape Town. Anna Ziemenski/AFP/Getty Images hide caption

itoggle caption Anna Ziemenski/AFP/Getty Images