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In this April 29, 2008, photo, a man pushes a shopping cart down a produce aisle at a Maumelle, Ark., Wal-Mart Supercenter store. Wal-Mart Stores Inc. on Tuesday, July 1, 2008 unveiled a new Web site noting their efforts to provide locally grown produce at its stores across the nation. The Bentonville-based retailer says the effort also helps cut down on mileage delivering the goods to stores. (AP Photo/Danny Johnston)