Mattheos Koffas (left), a biochemical engineer at Rensselaer Polytechnic Institute, and Andrew Jones, a graduate student in his lab, with a flask of microbe-produced antioxidants. Dan Charles/NPR hide caption

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Vani Hari, known as the "Food Babe," speaks at the Green Festival in Los Angeles on Sept. 12. Hari has made a name for herself by investigating ingredients in Big Food products that she deems potentially harmful. But critics accuse her of stoking unfounded fears. Jonathan Alcorn/Bloomberg via Getty Images hide caption

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Baked Squash Kibbeh: Middle-Eastern kibbeh is a finely ground combination of beef or lamb, bulgur and onions either formed into balls and deep-fried or pressed into a pan and baked. For a vegetarian version of this flavorful dish, why not pair butternut squash with the warm spices? Steve Klise/Courtesy of America's Test Kitchen hide caption

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How many calories in that doughnut? A Starbucks coffee shop in New York City displays calorie information next to menu items. New FDA rules will require all chain restaurants and similar eating establishments to post calorie labels. Chris Hondros/Getty Images hide caption

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When beverage companies like Pepsi create ad campaigns with stars like Beyonce, they're trying to appeal to youth, says Jennifer Harris of the Rudd Center for Food Policy & Obesity. Walter McBride/Corbis hide caption

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The SmartMat is a responsive yoga mat that seeks to improve one's yoga practice. Microsensors embedded in the mat record and provide adjustments to the user in real time. Courtesy of SmartMat hide caption

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Volunteers pass out fresh vegetables for a Thanksgiving meal at the Alameda Food Bank in Alameda, Calif., in 2009. The percentage of Americans who report struggling to afford food has remained stubbornly near recession-era highs. Justin Sullivan/Getty Images hide caption

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These wooden tokens are handed out to shoppers who use SNAP benefits to purchase fresh produce at the Crossroads Farmers Market near Takoma Park, Md. Customers receive tokens worth twice the amount of money withdrawn from their SNAP benefits card — in other words, they get "double bucks." Dan Charles/NPR hide caption

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A recent study found obese women are more likely than other women to work physically demanding jobs, like the kind that call for hard hats. They're less likely to work in jobs that require a lot of interaction with clients and customers — jobs that, on average, make more money. iStockphoto hide caption

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Berkeley's efforts to pass a penny-per-ounce tax on sugary drinks faced opposition with deep pockets — but it also got sizable cash infusions from some big-name donors. Justin Sullivan/Getty Images hide caption

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The majority of voters in San Francisco and Berkeley, Calif., voted in favor of a soda tax, but the measure didn't gain the required two-thirds majority required in San Francisco. Justin Sullivan/Getty Images hide caption

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The scariest part of the holiday comes in the days that follow, as parents fight and negotiate to limit how much candy their kids eat. NPR's Gisele Grayson decided to pay her kids off to give up their loot. iStockphoto hide caption

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