When anthropologists tallied the use of emotional words through a century of literature, they included many books without clear emotional content — technical manuals, for example, and automotive repair guides. Steve Debenport/iStockphotography hide caption

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Mining Books To Map Emotions Through A Century
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Frequent spitting up affects about half of babies under six months, but it's usually not gastroesophageal reflux disease, or GERD. iStockphoto.com hide caption

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Newark Doctor Aims To Be Education's 'Michael Jordan'
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When Melissa McCann (left) suffered a stroke in 2007, her twin sister, Terry Blanchard, helped her make a full recovery. McCann is now back to work as a flight nurse with Life Flight at the Eastern Maine Medical Center in Bangor. David Wright/Redux Pictures for NPR hide caption

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As Stroke Risk Rises Among Younger Adults, So Does Early Death
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Reducing dietary salt and alcohol, exercising, not smoking and maintaining a healthy weight are other lifestyle tweaks known to help prevent or reduce high blood pressure, doctors say. David McNew/Getty Images hide caption

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Study Hints Vitamin D Might Help Curb High Blood Pressure
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Joy Reynolds of San Diego looks at the newspapers on display at the Newseum in Washington, D.C., on June 29, 2012, following the Supreme Court ruling on President Obama's health care law. David Goldman/AP hide caption

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Three Years On, States Still Struggle With Health Care Law Messaging
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Dr. Nayna Patel performs an ultrasound exam on Rinku Macwan, at a hospital near Ahmedabad, India. It's illegal in India for doctors to reveal a baby's sex during these exams, but many do it anyway. Sam Panthaky/AFP/Getty Images hide caption

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A worker stands on top of a storage bin on July 27, 2011, at a drilling operation in Claysville, Pa. The dust is from powder mixed with water for hydraulic fracturing. Keith Srakocic/AP hide caption

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Sand From Fracking Could Pose Lung Disease Risk To Workers
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A new study from the Centers for Disease Control and Prevention finds no link between the number of vaccinations a young child receives and the risk of developing autism spectrum disorders. Jeff J. Mitchell/Getty Images hide caption

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Number Of Early Childhood Vaccines Not Linked To Autism
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Taxes this year will be as much of a drag as ever. But not because of the Affordable Care Act. iStockphoto.com hide caption

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Obamacare Won't Affect Most 2012 Taxes, Despite Firm's Claim
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Leslie Morgan Steiner shares her story of domestic abuse at TEDxRainier. TED hide caption

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Why Don't Domestic Violence Victims Leave?
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Philip Zimbardo explains his infamous Stanford Prison experiment at a TED conference. Andrew Heavens/Courtesy of TED hide caption

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Why Do Good People Do Bad Things?
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