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Why Males Are Biology's Riskier Sex
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New data have confirmed major differences in mutation rates between the sexes — showing that children inherit more mutations from their dads than from their moms, says guest commentator Robert Martin.

(Image credit: Tuan Tran/Getty Images)

Mars Rover Curiosity's Panoramic Photo Depicts Its Epic Journey
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It captured images that show some of the key regions NASA's robot has explored since 2012.

(Image credit: NASA/JPL-Caltech/MSSS)

Linguists Discover Previously Unidentified Language In Malaysia
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Swedish researchers were studying one rare language in southeast Asia, when they discovered a group of 280 resettled people speaking a different language, never observed or documented before.

(Image credit: Niclas Burenhult/Lund University)

New Technology Aims To Take The Sugar Out Of Gelato — Not The Flavor
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The Italian treat requires a certain formula to make it just right, and that means sugar. But as more people try to eat healthy, gelaterias must keep pace. A new machine is a step in that direction.

(Image credit: Irina Marwan/Getty Images)

SpaceX Prepares To Launch Powerful Falcon Heavy Rocket
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A rocket more powerful than any other in use today is scheduled to launch between 2:20 and 4:00 p.m. ET Tuesday, complete with a cherry red Tesla car on board.

(Image credit: Joe Raedle/Getty Images)

Her Seizures Looked Like Epilepsy, But Her Brain Looked Fine
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For a surprising number of people who appear to have epilepsy, the real problem is psychogenic non-epileptic seizures, a little-known condition.

(Image credit: Maria Fabrizio for NPR)

Business And Wildlife Groups Skip The Fight, Work Together To Save A Species
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When an animal is listed as endangered that can be bad news for nearby businesses. That's why Georgia's biggest utility is helping to protect the slow-breeding gopher tortoise.

(Image credit: Todd Stone/AP)

For Now, Sequencing Cancer Tumors Holds More Promise Than Proof
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Sequencing the DNA of cancer tumors to help pinpoint treatment is an emerging element of precision medicine. While patients and doctors alike want these tests, they often don't benefit patients.

(Image credit: Meredith Rizzo/NPR)

Montana Barley Fields Become Front Line For Climate Change And Beer
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Barley, the "king of malt," needs a precise recipe of water and sunshine to thrive — too much of either will cause it to wither and die. And amid a changing climate, that's exactly what's happening.

(Image credit: Tony Bynum/Food & Environment Reporting Network)

Home Care Agencies Often Wrongly Deny Medicare Help To The Chronically Ill
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Home health firms sometimes turn away Medicare beneficiaries who have chronic health problems by incorrectly claiming Medicare won't pay their for their services, say advocates for patients.

(Image credit: Heidi de Marco/Kaiser Health News)