Republican presidential candidate Mitt Romney makes his case about Medicare during a briefing in South Carolina in August. Evan Vucci/AP hide caption

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Blood samples dry during malaria screening. Public health workers call for more malaria testing in Africa to stop costly drugs from being handed out to kids with pneumonia. Paula Bronstein/Getty Images hide caption

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What they pull up is discouraging. Normally, 30 seconds under water would bring up a cage full of mostly healthy oysters. This time, Jimmy Bloom pulls up a cage that is barely one-third full. And it's haul is a mix of broken, chipped, meatless oysters. Jeff Cohen for NPR hide caption

itoggle caption Jeff Cohen for NPR

People look at homes and businesses destroyed during Superstorm Sandy on Tuesday in the Rockaway section of Queens, N.Y. Spencer Plat/Getty Images hide caption

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Researchers at New York University Hospital worry the mice they use to study human disease may have perished in the flooding caused by Superstorm Sandy. iStockphoto.com hide caption

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Hurricane Sandy's tear across the Caribbean left at least 54 dead in Haiti, where many people still live in tents because of damage from the 2010 earthquake. Thony Belizaire/AFP/Getty Images hide caption

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Two boys study together at a Chicago yeshiva in 2009. Public health officials say this type of close physical contact caused a mumps outbreak to spread throughout several orthodox Jewish communities in and around New York City. M. Spencer Green/AP hide caption

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The secret to making something low-fat taste good and keep us fuller longer may be in its thickness. iStockphoto.com hide caption

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Dr. Esther Dalizu holds a pack of Coartem Malaria drugs in a pharmacy in Nairobi, Kenya, last year. Sayyid Azim/AP hide caption

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Ambulances line up outside New York University Langone Medical Center to evacuate patients after backup generators failed when Sandy knocked out power in Lower Manhattan Monday. John Minchillo/AP hide caption

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Republican presidential candidate Mitt Romney speaks about the Supreme Court ruling on health care in Washington on June 28. Charles Dharapak/AP hide caption

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