USA - Wal-Mart Enters Organic Food Market... Radicchio grows on an organic farm at the Clark Valley Organic Farms in Los Osos, California. The nation's largest grocery retailer, Wal-Mart, has decided that offering more organic food will help modernize its image and broaden its appeal to urban and other upscale consumers. Wal-Mart's interest is expected to change organic food production in substantial ways. Phil Klein/photo

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