Year in Review: Science Stories of 2011

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Rachel Zayas, a registered nurse, sets up the shift board for the night shift at the Cleveland Clinic. Chuck Crow/The Plain Dealer /Landov hide caption

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Laurel Fontaine, 16, (left) and her twin sister Heather. When Laurel was 11 years old, she suffered a stroke that destroyed 80 percent of the left side of her brain. The singing therapy helped her regain the ability to speak. Ellen Webber for NPR hide caption

toggle caption Ellen Webber for NPR

Singing Therapy Helps Stroke Patients Speak Again

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Experiences in youth shape our health in old age. That's the key lesson from the world's longest-running medical study. iStockphoto.com hide caption

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Poked And Prodded For 65 Years, In The Name Of Science

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The War On Cancer Turns 40

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A Transportation Security Administration volunteer demonstrates a full-body scanner at Chicago's O'Hare International Airport in March 2010. Scott Olson/Getty Images hide caption

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Wouldn't you love to know what she's jotting down? Of course you would. iStockphoto.com hide caption

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Sleepy police were likelier to fall asleep while driving, a new survey of nearly 5,000 officers in the U.S. and Canada finds. About 40 percent of officers surveyed reported sleep disorders, with various health implications. Sean Locke/iStockphoto hide caption

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