Charles Mayer, 30, of San Diego survived an IED attack while serving in Iraq in 2010, but has suffered from complications including PTSD. Stuart Palley for NPR hide caption

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Stuart Palley for NPR

War Studies Suggest A Concussion Leaves The Brain Vulnerable To PTSD

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Simone Biles flies through the air while performing on the balance beam at the Olympics in Rio de Janeiro. Dmitri Lovetsky/AP hide caption

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Dmitri Lovetsky/AP

How A 'Sixth Sense' Helps Simone Biles Fly, And The Rest Of Us Walk

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When Blind People Do Algebra, The Brain's Visual Areas Light Up

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Experimental drugs that clear clumps of proteins from the brains of Alzheimer's patients haven't panned out yet. Science Photo Library/Pasieka/Getty Images hide caption

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Test Of Experimental Alzheimer's Drug Finds Progress Against Brain Plaques

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Kelly Slater Wave Co Todd Glaser/Courtesy of Kelly Slater Wave Co hide caption

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Todd Glaser/Courtesy of Kelly Slater Wave Co

Surfers And Scientists Team Up To Create The 'Perfect Wave'

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Despite Lessons From 2009 Quake, Buildings In Italy Remain Vulnerable

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Russian tennis star Maria Sharapova isn't competing at the 2016 Olympics. At a March 7 press conference in Los Angeles, she told reporters she'd tested positive for meldonium, a prescription heart drug that improves blood flow. It was banned in January by the World Anti-Doping Agency. Robyn Beck/AFP/Getty Images hide caption

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Robyn Beck/AFP/Getty Images

Olympic Athletes Still Use Some Rx Drugs As A Path To 'Legal Doping'

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A Soldier-Scientist's Insights Expand Understanding Of Brain Injuries

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Parkinson's disease, smoking, certain head injuries and even normal aging can influence our sense of smell. But certain patterns of loss in the ability to identify odors seem pronounced in Alzheimer's, researchers say. CSA Images/Color Printstock Collection/Getty Images hide caption

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CSA Images/Color Printstock Collection/Getty Images

A Sniff Test For Alzheimer's Checks For The Ability To Identify Odors

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Lucky laboratory mice got to watch scenes from Orson Welles' classic Touch of Evil, starring Janet Leigh and Charlton Heston. Keystone/Getty Images hide caption

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A Mouse Watches Film Noir And Offers Clues To Human Consciousness

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This synthetic stingray is made of gold, silicone and live muscle cells from a rat. Scientists use pulses of light to guide its propulsion. Karaghen Hudson and Michael Rosnach/Science hide caption

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Karaghen Hudson and Michael Rosnach/Science

Synthetic Stingray May Lead To A Better Artificial Heart

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Researchers have long known that exercise is good for the brain. An enzyme produced by muscles might help explain why. Monalyn Gracia/Corbis/VCG/Getty Images hide caption

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A Protein That Moves From Muscle To Brain May Tie Exercise To Memory

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The Gray Team with Maj. Jennifer Bell (center), who ran a concussion clinic, seen in the Helmand province of Afghanistan in 2010: Col. Michael Jaffee (from left) , Capt. James Hancock, Col. Geoffrey Ling, Lt. Col. Shean Phelps and Col. Robert Saum. Courtesy of Christian Macedonia hide caption

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Courtesy of Christian Macedonia

How A Team Of Elite Doctors Changed The Military's Stance On Brain Trauma

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Kit Parker's Story Part I

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Months after a concussion or other traumatic brain injury, you may sleep more hours, but the sleep isn't restorative, a study suggests. iStockphoto hide caption

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iStockphoto

A Concussion Can Lead To Sleep Problems That Last For Years

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