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Purdue Pharma, maker of the opioid OxyContin, has a subsidiary that won a patent for a treatment for opioid addiction. Bloomberg via Getty Images hide caption

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Bloomberg via Getty Images

"The biggest challenge for me was to see how I would be a father again," says Dr. Naveed Khan, who was injured while driving an all-terrain vehicle. "With two able-bodied parents at home, it was easier." Shelby Knowles for NPR hide caption

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Shelby Knowles for NPR

Taken For A Ride: M.D. Injured In ATV Crash Gets $56,603 Bill For Air Ambulance Trip

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This adult Anopheles gambiae mosquito — the kind that spreads malaria — was genetically modified as part of the study. Andrew Hammond hide caption

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Andrew Hammond

Mosquitoes Genetically Modified To Crash Species That Spreads Malaria

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Jean Couch, 75, perches on the edge of a chair at her home in Los Altos Hills, Calif. She teaches people the art of sitting in chairs without back pain. Erin Brethauer for NPR hide caption

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Erin Brethauer for NPR

Can't Get Comfortable In Your Chair? Here's What You Can Do

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Of parents who tell pollsters their teens have trouble sleeping, 23 percent say the kids are waking up at night worried about their social lives. A third are worried about school. All-night access to electronic devices only aggravates the problem, sleep scientists say. 3photo/Getty Images hide caption

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3photo/Getty Images

Because of a recent court decision, the size of the financial incentive your employer offers you in hopes of motivating you to lower your cholesterol or lose weight may soon shrink. Molly Cranna/Refinery29/Getty Images hide caption

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Molly Cranna/Refinery29/Getty Images

Immature human eggs (pink) were created by Japanese researchers using stem cells that were derived from blood cells. Courtesy of Saitou Lab hide caption

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Courtesy of Saitou Lab

Scientists Create Immature Human Eggs From Stem Cells

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Yogurt selections like this one at a Los Angeles 365 by Whole Foods Market store are getting larger, but a new U.K. study warns that many contain lots of added sugar. Patrick T. Fallon/Bloomberg via Getty Images hide caption

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Patrick T. Fallon/Bloomberg via Getty Images

If patients are obese, their physicians should refer them to behavior-based weight loss programs or offer their own, a national panel of experts says. Yet many doctors aren't having the necessary conversations with their patients. Tetra Images/Getty Images hide caption

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Tetra Images/Getty Images

Megan Baker (left) of Papa & Barkley Co., a Cannabis company based in Eureka, Calif., shows Shirley Avedon of Laguna Woods different products intended to help with pain relief. Stephanie O'Neill for NPR hide caption

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Stephanie O'Neill for NPR

Ticket To Ride: Pot Sellers Put Seniors On The Canna-Bus

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Skull fractures, concussions and broken bones are common injuries when children not yet able to walk use infant walkers and fall down stairs. Mint Images/Getty Images hide caption

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Mint Images/Getty Images

Daily low-dose aspirin can be of help to older people with an elevated risk for a heart attack. But for healthy older people, the risk outweighs the benefit. Bruno Ehrs/Getty Images hide caption

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Bruno Ehrs/Getty Images

Study: A Daily Baby Aspirin Has No Benefit For Healthy Older People

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After impact, the authentic Specialized Evade helmet on the left held up but the counterfeit on the right crumbled. Specialized says the fakes lack reinforced roll cages — internal skeletons that hold the helmets together even after a crash. Courtesy of Specialized Bicycles hide caption

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Courtesy of Specialized Bicycles

Fake Bike Helmets: Cheap But Dangerous

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