Jon Hamilton Jon Hamilton is a correspondent for NPR's Science Desk.
Jon Hamilton 2010
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Jon Hamilton

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Katherine Streeter for NPR

Brains Sweep Themselves Clean Of Toxins During Sleep

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Bob Adams is a lab animal veterinarian at Johns Hopkins University. Maggie Starbard/NPR hide caption

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Maggie Starbard/NPR

Scientists have discovered four new DEET-like mosquito repellents. Three of them are safe to eat. Courtesy of Pinky Kai/University of California, Riverside hide caption

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Courtesy of Pinky Kai/University of California, Riverside

A DEET-Like Mosquito Spray That Smells Like Jasmine Or Grapes?

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Goddard Space Flight Center Scientific Visualization Studio/NASA

Does a glass or two of wine during pregnancy really increase the child's health risks? Epigenetics may help scientists figure that out. Katherine Streeter for NPR hide caption

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Katherine Streeter for NPR

A Global Hawk unmanned aircraft comes in for a landing at the Wallops Flight Facility in Wallops Island, Va., on Sept. 7, 2012, after studying Hurricane Leslie. The remotely controlled planes can stay in the air for as long as 28 hours and fly over hurricanes at altitudes of more than 60,000 feet. NASA hide caption

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NASA

Spy Drones Turning Up New Data About Hurricanes And Weather

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Strenuous mental exercise like reading difficult books, solving tricky math problems — or, maybe, playing the right video game — can help keep a healthy brain sharp, research suggests. Images.com/Corbis hide caption

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Images.com/Corbis

Multitasking After 60: Video Game Boosts Focus, Mental Agility

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The underlying biology of age-related memory glitches — in old mice and old people — is different from what happens with Alzheimer's, recent research suggests. Anthony Bradshaw/iStockphoto.com hide caption

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Anthony Bradshaw/iStockphoto.com

Belgian Blue bulls look like they are made of muscle because they have a mutation in the gene that codes for the protein myostatin. In humans, as in other types of cattle, myostatin normally limits the number of muscle fibers that form before birth and then limits the growth of those fibers later on. Courtesy of Se-Jin Lee and Alexandra McPherron/PNAS hide caption

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Courtesy of Se-Jin Lee and Alexandra McPherron/PNAS

A gene known as DRD2 affects the brain's dopamine system and is known to be associated with aggressive behavior. iStockphoto.com hide caption

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iStockphoto.com

PlastiPure helps manufacturers create water bottles and other plastic products that have no estrogenic activity. PlastiPure hide caption

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PlastiPure

BPA-Free Plastics Going On Trial In Texas

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Patong beach in Phuket, Thailand, was destroyed by the tsunami on Dec. 25, 2004. More than 230,000 people died. Gamma-Rapho via Getty Images hide caption

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Gamma-Rapho via Getty Images

Tips For Surviving A Mega-Disaster

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Instructional assistant Jessica Reeder touches her nose to get Jacob Day, 3, who has autism, to focus his attention on her during a therapy session in April 2007. Rich Pedroncelli/AP hide caption

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Rich Pedroncelli/AP

Barton Holmes, 2, sits with his father, Kevin Holmes, and his mother, Catherine McEaddy Holmes, during an appointment at Children's National Medical Center in Washington, D.C. Maggie Starbard/NPR hide caption

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Maggie Starbard/NPR

With Epilepsy Treatment, The Goal Is To Keep Kids Seizure-Free

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