The cost of an EpiPen two-pack has risen more than 400 percent in recent years. The drug is used to halt severe allergic reactions. Joe Raedle/Getty Images hide caption

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Discounts Aren't Enough to Halt Outrage At High EpiPen Prices

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Scopes used to diagnose gastrointestinal problems are typically cleaned and reused. Dave King/Dorling Kindersley/Science Museum, London/Science Source hide caption

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By testing tumors, researchers hoped to identify women who could avoid chemotherapy without increasing their risk of a cancer recurrence. Voisin/Phanie/Science Source hide caption

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Study Of Breast Cancer Treatment Reveals Paradox Of Precision Medicine

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Scientists Engineer An Opioid That May Reduce Pain With Less Risk

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Health insurance plans may exclude coverage for many types of genetic testing that aren't required by law. Andrew Brookes/Getty Images hide caption

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When Pregnant Women Need Medicine, They Encounter A Void

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Diabetes alert dogs are trained to detect low blood glucose in a person. The dogs can cost $20,000, but little research has been done on their effectiveness. Frank Wisneski/Flickr hide caption

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Between 1999 and 2014, the number of deaths in the U.S. from prescribed opioids quadrupled. Meanwhile medical students were getting very little training on how to spot patients who are at risk for addiction, or how to treat it. Matt Lincol/Getty Images/Cultura Exclusive hide caption

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New drugs like Harvoni effectively cure hepatitis C, but they haven't yet been approved for use in children. Lloyd Fox/Baltimore Sun/TNS via Getty Images hide caption

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