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Gizmo Uses Lung Cells To Sniff Out Health Hazards In Urban Air

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Researchers Revive A Plant Frozen In Time

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Bad Diagnosis For New Psychiatry 'Bible'

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With Chemical Tweaks, Cement Becomes A Semiconductor

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Channel-billed toucans are important seed dispersers in rain forests. Courtesy of Lindolfo Souto/AAAS/Science hide caption

toggle caption Courtesy of Lindolfo Souto/AAAS/Science

Big-Mouthed Toucans Key To Forest Evolution

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Headed To Mars? Watch Out For Cosmic Rays

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The metal in an Egyptian iron bead dating from around 3,300 BC has been found to have originated from space, according to analysis. Here, the bead is seen in (clockwise from top left) a photograph, a CT cross-section view, a model of nickel oxides, and a model in which blue areas represent the rich presence of nickel inside the bead. The Open University/University of Manchester hide caption

toggle caption The Open University/University of Manchester

Public Opinion On The Record Number Of Female Breadwinners

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Scientists Discover Rip Van Winkle Of The Plant World

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Why Do Whistle-Blowers Become Whistle-Blowers?

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The small patch in the middle of the image is Aulacomnium turgidum, a type of bryophyte plant. Researchers in the Canadian Arctic say they are surprised the bryophytes were still green, even after being covered by ice. Courtesy of Caroline La Farge hide caption

toggle caption Courtesy of Caroline La Farge

From the May 29, 2013, 'Morning Edition': NPR's Joe Palca reports on the discovery

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Studies Question Potential Alzheimer's Treatment

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The origin of itch has confounded scientists for decades. Oktay Ortakcioglu/iStockphoto.com hide caption

toggle caption Oktay Ortakcioglu/iStockphoto.com

Why You Have To Scratch That Itch

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