As Americans Rush to Fresh Food, Supermarket Chains Follow By: CNBC.com News October 08, 2012 at 08:10 AM EDT Local foods sales are booming, having doubled to $11 billion in the past ten years. Wal-Mart, Safeway and other big firms are trying to cash in. Read More >> Related Stocks: Wal-Mart Stores, Inc. Whole Foods Market