A health inspection grade is posted outside a Manhattan eatery. In several cities, Yelp users can now find out how a restaurant scored on its health inspection well before they walk through the door. Mario Tama/Getty Images hide caption

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Schedule 2 narcotics Morphine Sulfate, OxyContin and Opana. Liquefied as an injectable, Opana has been connected to a major abuse problem in rural southern Indiana. Rich Pedroncelli/AP hide caption

itoggle caption Rich Pedroncelli/AP

The H1N1 swine flu virus kills some people, while others don't get very sick at all. A genetic variation offers one clue. Centre For Infections/Health Pro/Science Photo Library/Getty Images hide caption

itoggle caption Centre For Infections/Health Pro/Science Photo Library/Getty Images

MaryAnn Anselmo has started to sing again after recovering from brain surgery and having successful treatment with a drug that targeted a mutation in her tumor cells. Dave Gershgorn/WNYC hide caption

itoggle caption Dave Gershgorn/WNYC

If Reps. Nancy Pelosi and John Boehner win and their plan becomes law, it would kill what's known on Capitol Hill as the "doc fix." David McNew/Getty Images hide caption

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A simulation from the Neitz lab of what colorblindness looks like, with normal color vision on the left and red-green colorblindness on the right. Courtesy of Neitz Laboratory hide caption

itoggle caption Courtesy of Neitz Laboratory

"There's no reason to believe that exposure to arsenic in food and wine is above levels that are considered to be safe," says Susan Ebeler, a professor and chemist in the Foods For Health Institute at the University of California, Davis. Erik Schelzig/ASSOCIATED PRESS hide caption

itoggle caption Erik Schelzig/ASSOCIATED PRESS

The Josephson family in 2001, after Dixie (third from left) was told she had cancer. Courtesy of the Josephsons hide caption

itoggle caption Courtesy of the Josephsons

Tax preparation software doesn't always calculate the complexity of Affordable Care Act subsidies and credits properly. Daniel Acker/Bloomberg via Getty Images hide caption

itoggle caption Daniel Acker/Bloomberg via Getty Images