Jon Hamilton Jon Hamilton is a correspondent for NPR's Science Desk. Currently he focuses on neuroscience, health risks, and extreme weather.

Scans Show Former NFL Player Aaron Hernandez Had A Severe Case Of CTE

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At Least 6 People Dead After Florida Nursing Home Loses Power

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Hurricane Center In Florida Keeps Watch Over Irma

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Hurricane Irma Heads Toward Miami As Forecasters Downgrade Storm To Category 4

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Simply going up in pitch at the end of a sentence can transform a statement into a question. Lizzie Roberts/Ikon Images/Getty Images hide caption

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Lizzie Roberts/Ikon Images/Getty Images

Really? Really. How Our Brains Figure Out What Words Mean Based On How They're Said

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Rats and people may rely on "metamemory" in a variety of different ways, scientists say. For a rat, it's likely about knowing whether you remember that predator in the distance; for people, knowing what we don't know helps us navigate social interactions. fotografixx/Getty Images/iStockphoto hide caption

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fotografixx/Getty Images/iStockphoto

From Rats To Humans, A Brain Knows When It Can't Remember

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Professional fighter Gina Mazany practices during a training session at Xtreme Couture Mixed Martial Arts in Las Vegas. She well remembers her first concussion — which came in her first fight. "I was throwing up that night," Mazany says. Bridget Bennett for NPR hide caption

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Bridget Bennett for NPR

Female Athletes Are Closing The Gender Gap When It Comes To Concussions

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Glioblastomas are the most common malignant brain tumor. About 12,000 people in the U.S. are diagnosed with the cancer every year. Sherbrooke Connectivity Imaging Lab/Science Source hide caption

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Sherbrooke Connectivity Imaging Lab/Science Source

John McCain Was Diagnosed With A Glioblastoma, Among The Deadliest Of Cancers

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New research finds that African-Americans who grow up in harsh environments and endure stressful experiences are much more likely to develop Alzheimer's or some other form of dementia. Leland Bobbe/Getty Images hide caption

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Leland Bobbe/Getty Images

Stress And Poverty May Explain High Rates Of Dementia In African-Americans

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Jennifer Qian for NPR

Listen to the Invisibilia episode

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When the neurons that release the neurotransmitter dopamine die, people develop Parkinson's disease. Roger J. Bick &/Brian J. Poindexter / UT-Houston/Science Source hide caption

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Roger J. Bick &/Brian J. Poindexter / UT-Houston/Science Source

Brain Cell Transplants Are Being Tested Once Again For Parkinson's

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Eight different real faces were shown to a monkey. The images were then reconstructed using analyzing electrical activity from 205 neurons recorded while the monkey was viewing the faces. Courtesy of Doris Tsao/Cell Press hide caption

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Courtesy of Doris Tsao/Cell Press

Cracking The Code That Lets The Brain ID Any Face, Fast

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Sometime between grade school and grad school, the brain's information highways get remapped in a way that dramatically boosts self-control. Thomas Trutschel/Photothek via Getty Images hide caption

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Thomas Trutschel/Photothek via Getty Images

As Brains Mature, More Robust Information Networks Boost Self-Control

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