A health worker weighs a Somali baby on scales at a medical clinic in Mogadishu. Babies in Somalia have the highest risk of dying within the first 24 hours after birth. Carl de Souza/AFP/Getty Images hide caption

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A baby receives a polio vaccine at the Medina Maternal Child Health center in Mogadishu, Somalia, on Wednesday. Somalia has one of the lowest immunization rates in the world. Ben Curtis/AP hide caption

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An extract of sweet wormwood has been used in China for thousands of years to treat malaria, but being able to make mass quantities of the extract has been elusive, until now. Sarah Cuttle/Getty Images hide caption

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Dengue fever patients are treated in a hospital in Asuncion, Paraguay, in January. Norberto Duarte/AFP/Getty Images hide caption

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A child is immunized against polio at the health clinic in a farming village in northern Nigeria. The procedure involves pinching two drops of the vaccine into the child's mouth. For full protection, the child needs three doses, spaced out over time. David Gilkey/NPR hide caption

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The city of Sao Paolo, Brazil, shot with a fisheye lens. Standards of living are improving not just in the big developing nations like Brazil, but also in smaller countries such as Bangladesh and Ghana. Daniel Incandela/Flickr via Wikimedia Commons hide caption

itoggle caption Daniel Incandela/Flickr via Wikimedia Commons

Many homes that were rebuilt after the earthquake in 2010 are even more dangerous than the original ones. This three-story home was put up after the quake but is already slated for demolition to make way for an 18-unit housing project. David Gilkey/NPR hide caption

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HIV drugs not only can keep patients healthy but also can stop the sexual transmission of the virus. Here an HIV-positive mother picks up medications at a hospital outside Johannesburg, South Africa. Alexander Joe/AFP/Getty Images hide caption

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Workers at the SAE-A textile plant inside the Caracol Industrial Park in northern Haiti. Backers of the project say it could create 60,000 jobs inside the park. David Gilkey/NPR hide caption

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A Nigerian health commissioner Dr. Sani Malam vaccinates a child for polio during a national immunization drive in Bauchi, Nigeria, last week. Deji Yake/EPA /Landov hide caption

itoggle caption Deji Yake/EPA /Landov

Mont Joli Hotel looks out over Cap-Haitian in northern Haiti. The owner says he's usually fully booked and plans to double the hotel's capacity. Haiti is trying to expand its tourism infrastructure and tap in to the multibillion-dollar Caribbean travel market. David Gilkey/NPR hide caption

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Jacqueline Syra has been living in the La Piste camp for three years. She says she has no idea when she will be able to leave. David Gilkey/NPR hide caption

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