Miller Farms in Maryland is a family-run operation that sells its home-grown vegetables at farmers' markets and local grocery stores. Phil Miller, whose family owns the farm, says he's trying to earn a food safety certification now required by many food buyers. Maggie Starbard/NPR hide caption

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A clampdown on contamination in growing fields has pushed out wildlife and destroyed habitats. Adam Cole/NPR hide caption

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A worker monitors the loading of containers on to a ship at a harbor in China's Shandong province. Under a new U.S. law, Chinese food exporters will now have to share more food safety information with American food importers. STR/AFP/Getty Images hide caption

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An oyster shucker on Samish Island, Wash. on Puget Sound. The state is frequently forced to close beaches to oyster gatherers because of the risks of harmful algae blooms. Ted S. Warren/AP hide caption

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Lean finely textured beef, made by Beef Products Inc., shown before packaging. AP/Beef Products Inc. hide caption

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Beef on display at a new Wal-Mart store in Chicago. The retailer announced it will offer consumers meat that does not contain lean finely textured beef. John Gress/Reuters /Landov hide caption

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The U.S. Department of Agriculture says it will give schools alternatives to ground beef made with what critics have called "pink slime." mcnsonbrg@yahoo.com/iStockphoto.com hide caption

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"Lean, finely textured meat" made from beef trimmings is often added to ground beef as a cheap filler Daniel Acker/Landov hide caption

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The Salt

Is It Safe To Eat 'Pink Slime'?

Thousands of people are adding their name to petitions urging the government stop buying beef trimmings. But food safety officials say the trimmings are still safe to eat.

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