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Volunteer Patrick Pezzati searches yards in Turners Falls, Mass., for discarded heroin needles. Karen Brown/WFCR hide caption

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Karen Brown/WFCR

A Rural Police Chief Asks Citizens To Help Pick Up Used Syringes

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Uzuri Pease-Greene, right, leads a walk through the public housing complex in the Potrero Hill neighborhood of San Francisco where her family lives. She is working to have the old buildings replaced. Talia Herman for NPR hide caption

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Talia Herman for NPR

Improving Housing Can Pay Dividends In Better Health

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Closing loopholes in background checks for gun purchases would reduce the risk of death and injury, doctors' and attorneys' groups say. Alexa Miller/Getty Images hide caption

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Alexa Miller/Getty Images

The Pseudomonas stutzeri bacterium, commonly found in soil, was the most prevalent subway microbe. Lower Manhattan was its prime hangout. Mason/Cell Systems 2015 hide caption

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Mason/Cell Systems 2015
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Child Abuse And Neglect Laws Aren't Being Enforced, Report Finds

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The UASK app helps sexually assaulted college students in D.C. access a range of services, from rides to the hospital to phone numbers for counselors. The information is personalized to their school. Another version of the app, ASK, provides the same resources to non-students. Emily Jan/NPR hide caption

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Emily Jan/NPR

App Links Sex Assault Survivors To Help, But Who Downloads It?

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Vapor from an e-cigarette obscures the user's face in a London coffee bar. Dan Kitwood/Getty Images hide caption

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Dan Kitwood/Getty Images

E-Cigarettes Can Churn Out High Levels Of Formaldehyde

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Ignaz Semmelweis washing his hands in chlorinated lime water before operating. Bettmann/Corbis hide caption

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Bettmann/Corbis

The Doctor Who Championed Hand-Washing And Briefly Saved Lives

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In Philadelphia, some drug users are selling clean needles from needle exchange programs on the street. Researchers say the black market isn't necessarily a bad thing. ImageZoo/Corbis hide caption

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ImageZoo/Corbis

Needle Exchange Program Creates Black Market In Clean Syringes

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Police officers check drivers at a sobriety checkpoint in Escondido, Calif. Lenny Ignelzi/AP hide caption

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Lenny Ignelzi/AP

Traffic Stops Persuade People To Avoid Drinking And Driving

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