Adrian Mesa protests the overuse of antibiotics in meat production outside a Burger King in Coral Gables, Fla. in 2003. Joe Raedle/Getty Images 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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Would you remember exactly what was in this salad more than a week after eating it?

Luciana Bueno Santos (LuBueno)/iStockphoto.com hide caption

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