The USDA has found salmonella on about a quarter of all cut-up chicken parts heading for supermarket shelves. It's a good reason to handle raw chicken carefully, wash your hands afterward, and cook the meat well. Sandor Weisz/Flickr hide caption

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The Super Food Express bus travels to schools in Mobile County, Ala., to ensure children are fed healthy meals when school is out of session. The bus is part of the USDA's summer food program, which President Obama says needs additional funding. USDA/Flickr hide caption

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About 50 percent of the vegetables available today are tomatoes and potatoes, according to new USDA data. Lettuce is the third most available single vegetable. Legumes and all other vegetables make up 41 percent of what's available. Ryan Kellman/NPR hide caption

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A lunch served by the Yarmouth, Maine, School Department on Sept. 26, 2014, featured Sloppy Joe's made with Maine beef and local beets, carrots, apples and potato salad. More than 80 percent of Maine schools said they served local foods in a survey conducted by the USDA. U.S. Department of Agriculture/Flickr hide caption

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Cattle raised at the U.S. Meat Animal Research Center in Clay Center, Neb. A New York Times investigation of animal suffering at the federal research center has prompted a USDA review. Nati Harnik/AP 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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People shop in a Miami grocery store on July 8. USDA says that despite the drop in unemployment, the number of food insecure Americans has not declined because higher food prices and inflation last year offset the benefits of a brighter job market. Joe Raedle/Getty Images hide caption

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Logan Kovach, 6, Matthew Kovach, 2, and Allyson Kovach, 5, eat a lunch distributed by the YMCA in Hopkins County, Kentucky. Pam Fessler/NPR hide caption

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