The World Health Organization's finalists for the next director-general (from left): Tedros Adhanom Ghebreyesus, Sania Nishtar and David Nabarro Fabrice Coffrini and Justin Tallis/AFP/Getty Images hide caption

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Fabrice Coffrini and Justin Tallis/AFP/Getty Images

Stanford bioengineering professor Manu Prakash looked to a children's toy to create a hand-powered centrifuge for processing blood tests. Kurt Hickman /Stanford University hide caption

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Kurt Hickman /Stanford University

Children's Whirligig Toy Inspires a Low-Cost Laboratory Test

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Third-year dental student Alex Dolbik checks the oral health of a patient at the Refugee Health Clinic in San Antonio. Wendy Rigby/Texas Public Radio hide caption

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Wendy Rigby/Texas Public Radio

In Texas, Students Help Provide Health Care For Refugees

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While incarcerated, Mark Baskerville says he suffered five diabetic comas. He says he's now doing a better job of managing his health. Rae Ellen Bichell/NPR hide caption

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Rae Ellen Bichell/NPR

Helping Ex-Inmates Stay Out Of The ER Brings Multiple Benefits

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Addiction to opioids and heroin is a major public health problem, but so is alcohol abuse. Toby Talbot/AP hide caption

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Toby Talbot/AP

Surgeon General Murthy Wants America To Face Up To Addiction

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Premature birth is the leading cause of infant death in the U.S. and also can cause lifelong disabilities. Anthony Saffery/Getty Images hide caption

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Cori Bargmann is applying her training as a neuroscientist to shaping the Chan Zuckerberg Initiative's ambitious agenda. Chan Zuckerberg Initiative hide caption

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Chan Zuckerberg Initiative

Applying A Silicon Valley Approach To Jump-Start Medical Research

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A government watchdog's report says Flint residents' exposure to lead in city drinking water could have been stopped months earlier by federal regulators. Carlos Osorio/AP hide caption

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Carlos Osorio/AP