Jamie Oliver during a scene filmed in Los Angeles from the second season of "Jamie Oliver's Food Revolution" on ABC. Mitch Haddad/AP hide caption

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The new nutrition law gives local providers preference when they bid for school food contracts. Christopher Furlong/Getty Images hide caption

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Are BPA-free bottles really safer than the ones that are chock-full of bisphenol A? Good luck trying to find out. David McNew/Getty hide caption

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Should a high school student building a DNA model also have his genetic code tested for disease risks? iStockphoto.com hide caption

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Jackson Coles, 2, sits on the lap of his mother, Christy, and watches objects flash on a computer screen that also tracks his eye movement. J. Adam Fenster/University of Rochester hide caption

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"I see the bed."

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Most of the stillbirths worldwide happen in south Asia and sub-Saharan Africa, and at least half of them take place during labor or birth. iStockphoto.com hide caption

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Gardening for health in Petaluma, Calif. Courtesy of Petaluma Health Center hide caption

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A premature newborn at a hospital in Havana, Cuba. STR/AFP/Getty Images hide caption

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A Hormone Gel Helps Prevent Premature Births

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