A student gets vaccinated against pertussis at a Los Angeles middle school in 2012. The state required that students be immunized to halt an epidemic of whooping cough. Kevork Djansezian/Getty Images hide caption

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Goodbye, Sodas. McDonald's says it will now market and promote Happy Meals only with milk, water or juice. Bill Parrish Photography/PR Newswire/AP hide caption

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MacArthur 'Genius' On Grit, Self Control And Success

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Arefa with Jami Valentine (left) and Staci Freeman. Arefa, who first stayed with the sisters while receiving medical care last year, came back to the U.S. this summer for follow-up treatment. Gloria Hillard for NPR hide caption

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A Young Afghan War Survivor Touches Two American Lives

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That's how it's supposed to work. But for most new moms, breast-feeding doesn't come easily, a study finds. iStockphoto.com hide caption

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Does a glass or two of wine during pregnancy really increase the child's health risks? Epigenetics may help scientists figure that out. Katherine Streeter for NPR hide caption

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How A Pregnant Woman's Choices Could Shape A Child's Health

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Scoliosis didn't keep golfer Stacy Lewis from becoming a top-ranked pro. She spent almost eight years wearing a back brace, yet still had to have surgery. Jonathan Ferrey/Getty Images hide caption

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Frustrated Adoptive Parents Turn To Online 'Exchanges'

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Genetically modified to be enriched with beta-carotene, golden rice grains (left) are a deep yellow. At right, white rice grains. Isagani Serrano/International Rice Research Institute hide caption

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Beer pong and other drinking games are popular among teenagers, and play a role in binge drinking. iStockphoto.com hide caption

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Obesity And Preserving Culture: Latinos Discuss Parenting Challenges

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Teenagers put in more than two hours a day of TV time on average, still more than what pediatricians say is healthy. iStockphoto.com hide caption

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Understanding The Wild Child, Or 'Nonconformist' Kid

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Kali Hardig, 12, was released from a hospital in Little Rock, Ark., on Sept. 11 after surviving a brain infection caused by amoebas. Danny Johnston/Associated Press hide caption

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