Parents now have more advice to consider when it comes to choosing organic foods. Here, Theo Shriver, 6, weighs organic produce at the Puget Consumers Co-op in Seattle. Elaine Thompson/AP hide caption

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A shopper surveys the produce at Pacifica Farmers Market in Pacifica, Calif., in 2011. AP hide caption

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A Bhutanese farmer puts her harvest of chilies on the roof of a shed to dry and protect it from wild boars, deer, and monkeys in 2006. James L. Stanfield/National Geographic/Getty Images hide caption

itoggle caption James L. Stanfield/National Geographic/Getty Images

Edgar Jaime (right) and his brother Jose Luis unload organic vegetables from their farm in Santa Monica, Calif. Now that U.S. and European organic standards are equivalent, more American organic farmers will be able to export to Europe. Damian Dovarganes/AP hide caption

itoggle caption Damian Dovarganes/AP