Twins in Malawi helped scientists discover a role the gut microbiome appears to play in severe malnutrition. Photograph courtesy of Tanya Yatsunenko hide caption

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Gut Microbes May Play Deadly Role In Malnutrition

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The British have long said, "Keep calm and carry on." But the catchphrase may need an update for health care. Keepcalm-o-matic.co.uk hide caption

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Health workers in Nepal culled chickens and destroyed eggs following an outbreak of bird flu in Kathmandu in October 2012. Prakash Mathema/AFP/Getty Images hide caption

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Scientists Put An End To Moratorium On Bird Flu Research

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In Syria, Addressing Medical Needs In An Embattled City

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Harvest wheat from a field near Wright, Kan. May 10, 2004. ORLIN WAGNER/ASSOCIATED PRESS hide caption

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Former Anti-GMO Activist Says Science Changed His Mind

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

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Beijing Grapples with Record Air Pollution

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A copper engraving from 1656 shows a plague doctor in Rome wearing a protective suit and a mask. Artwork by Paul Furst /Wikimedia.org hide caption

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Microbiologist Emma Allen-Vercoe invented the Robogut, a mechanical device that mimics conditions in the human colon. Courtesy of thestar.com hide caption

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Haitians protest against the United Nations peacekeepers in Port-au-Prince in November 2010. Hector Retamal/AFP/Getty Images hide caption

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After Bringing Cholera To Haiti, U.N. Plans To Get Rid Of It

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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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Despite Billions In Aid, Many Haitians Still Live In Squalid Camps

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Jan. 9, 2013 David Gilkey/NPR hide caption

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Haiti Then And Now: 3 Years After The Earthquake

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