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Greg O'Brien gathers his thoughts before a run in 2013. "Running is essential," he says. Michael Strong/Living With Alzheimers hide caption

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Michael Strong/Living With Alzheimers

One Man's Race To Outrun Alzheimer's

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Researchers Examine The Ways Of Southern Coyotes

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Students Patrick Rohrer, Sarah Warthen, Alix Piven and Lauren Urane are led by Mercyhurst University Archeologist Andy Hemmings. Their project has picked up where Florida's State Geologist Elias Sellards left off in 1915. Sellards led an excavation of the site where workers digging a drainage canal found fossilized human remains. Greg Allen/NPR hide caption

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Greg Allen/NPR

Can You Dig It? More Evidence Suggests Humans From The Ice Age

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A Neuroscientist Weighs In: Why Do We Disagree On The Color Of The Dress?

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Fernandina's Flicker (Colaptes fernandinae), a woodpecker found only in Cuba. Pete Oxford/Minden Pictures/Corbis hide caption

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Pete Oxford/Minden Pictures/Corbis

U.S. Biologists Keen To Explore, Help Protect Cuba's Wild Places

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A field of unharvested wheat is seen in Ashby-de-la-Zouch, England, in 2012. Wheat wasn't cultivated in Britain until some 6,000 years ago, but DNA evidence suggests early Britons were eating the grain at least 8,000 years ago. Darren Staples/Reuters/Landov hide caption

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Darren Staples/Reuters/Landov

Stone Age Britons Were Eating Wheat 2,000 Years Before They Farmed It

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Marine Biologist Eugenie Clark Remembered As Passionate Shark Advocate

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Opposition Grows To Nicaragua Canal Connecting Atlantic And Pacific

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From Naked Mole Rats To Dog Testicles: A Writer Explores The Longevity Quest

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Tim Meyers on his four-acre vegetable farm in southwestern Alaska. Behind him: an endless sea of tundra, and a glimpse of the town of Bethel. Eugenie Frerichs for NPR hide caption

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Eugenie Frerichs for NPR

An image of Ceres taken by NASA's Dawn spacecraft shows that the brightest spot on the dwarf planet has a dimmer companion. NASA/JPL-Caltech/UCLA/MPS/DLR/IDA hide caption

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NASA/JPL-Caltech/UCLA/MPS/DLR/IDA

An overgrowth of Clostridium difficile bacteria can inflame the colon with a life-threatening infection. Dr. David Phillips/Getty Images/Visuals Unlimited hide caption

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Dr. David Phillips/Getty Images/Visuals Unlimited

How Peer Pressure May Encourage Tax Delinquents To Pay Up

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