Patients sit after their cataract surgeries at a hospital of the Aravind Eye Care System in Madurai, India. Reinhard Krause/Reuters/Landov hide caption

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In a Healthpoint clinic in the village of Mallan in Punjab, India, lab technician Navdeep Sharma draws Suba Singh's blood sample. Part of Healthpoint's business plan is to offer cheap diagnostic tests at its clinics. Diagnosing and treating people in a single visit is one key to delivering affordable health care. Soma Vatsa/for NPR hide caption

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Would you remember exactly what was in this salad more than a week after eating it?

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A Haitian protester in Port-au-Prince last month spray-paints a wall, equating the UN mission in Haiti (abbreviated here as MINISTA) with cholera.

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A mother held her baby as she received an experimental malaria vaccine at the Walter Reed Project Research Center in Kombewa in Western Kenya in Oct. 2009.

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Paul Keim at work in his lab on the Northern Arizona University campus.

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Afghan men wait to receive psychiatric treatment in a Kabul hospital. Scarred by decades of war, social problems and poverty, more than 60 percent of Afghans suffer from stress disorders and mental health problems.

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Early morning view of an automated irrigation system in on a farm in Sudlersville, MD

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