As if we didn't have enough problems: Food-related protests have been occurring worldwide, and in the U.S. now major discounters are seeing runs on products, particularly rice, as both Sam’s Club, the Wal-Mart Stores Inc. operated discounter, and Costco Wholesale Corp. have seen shelves cleaned out ...

Wal-Mart Stores, Inc. (NYSE: WMT) is an American public corporation that runs a chain of large, discount department stores. It is the world's largest public corporation by revenue, according to the 2007 Fortune Global 500.[4] Founded by Sam Walton in 1962, it was incorporated on October 31, 1969, and listed on the New York Stock Exchange in 1972