The Man Who Invented the Grocery Store

A typical U.S. supermarket carries 42,000 items: Grab a cart, stroll the aisles and help yourself to an extravagant assortment of goods. Today it’s hard to imagine buying groceries any other way. But self-service was a game-changer when Clarence Saunders opened the first Piggly Wiggly in Memphis, Tenn., 100 years [...]