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"Farmers raise organic crops without using chemical pesticides, petroleum-based fertilizers, or sewage sludge-based fertilizers. They operate using the USDA’s list of accepted products. Organic certification is a three-year process, which requires growers to prove that the ground has not been chemically treated and all their growing practices meet organic standards."
"A meta-study – a scientific study that compares the results of many studies – published in March by The Organic Center, a nonprofit, showed that organic fruits and vegetables typically do have higher levels of nutrients such as vitamin C and antioxidants than conventionally grown food."
Read More From Original Article: http://news.medill.northwestern.edu/chicago/news.aspx?id=92269
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