A Yale University study analyzed the experience of 60 million Americans covered by traditional Medicare between 1999 and 2013, and found "jaw-dropping improvements in almost every area," the lead author says. Ann Cutting/Getty Images hide caption

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A nanosecond pulsed laser beam starts the photoacoustic imaging process. Geoff Story/Courtesy of Washington University in St. Louis hide caption

itoggle caption Geoff Story/Courtesy of Washington University in St. Louis

Christy O'Donnell, who has advanced lung cancer, is one of several California patients suing for the right to get a doctor's help with prescription medicine to end their own lives if and when they feel that's necessary. YouTube hide caption

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Giedre (left) and Tal Cohen in March 2013, while Giedre was still healthy. Since then, she's begun having symptoms of Alzheimer's disease. In Giedre's case, the illness is tied to a rare genetic mutation she inherited. Courtesy of Tal Cohen hide caption

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At a Minecraft camp in Shaker Heights, Ohio, kids trade secrets about making their virtual worlds come to life. Sarah Jane Tribble/WCPN hide caption

itoggle caption Sarah Jane Tribble/WCPN
Maria Fabrizio for NPR

Amanda Angelotti (left) and Connie Chen, both graduates of University of California, San Francisco's medical school, opted for careers in digital health. Josh Cassidy/KQED hide caption

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In this colorized image of a brain cell from a person with Alzheimer's, the red tangle in the yellow cell body is a toxic tangle of misfolded "tau" proteins, adjacent to the cell's green nucleus. Thomas Deerinck/NCMIR/Science Source hide caption

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Can you spot the four laundry pods? CR/John Powers and Ariana Salvato/Apotrophe/Courtesy of Consumer Reports hide caption

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Lorenzo Gritti for NPR

The latest guidelines for cholesterol-lowering drugs emphasize their use to manage patients' risk for cardiovascular disease rather than simply hitting numerical cholesterol targets. Roy Scott/Ikon Images/Corbis hide caption

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Cover art from Stoned. Current hide caption

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The varicella zoster virus causes chickenpox in children, then lurks in the body for years and can cause painful shingles later in life. James Cavallini/Science Source hide caption

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