A man pushes a friend in a wheelchair following an event in Beijing to raise awareness of accessibility issues for the disabled. Ng Han Guan/ AP Photo hide caption

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Lettuce at an organic vegetable farm in Teltow, Germany. Organic farmers in Germany are reporting a surge in demand for lettuce and cucumbers in the wake of an outbreak of E. coli after health officials warned people not to eat cucumbers, lettuce and tomatoes, though organic produce may not necessarily be safer. Sean Gallup/Getty Images hide caption

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Most of the stillbirths worldwide happen in south Asia and sub-Saharan Africa, and at least half of them take place during labor or birth. iStockphoto.com hide caption

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Microsoft founder Bill Gates, his wife Melinda French Gates and British Prime Minister David Cameron at the World Economic Forum on January 28, 2011, in Davos, Switzerland. Johannes Eisele/AFP/Getty Images hide caption

itoggle caption Johannes Eisele/AFP/Getty Images