Food halls: A world of flavors under one roof

When Americans actually left their houses to shop, food courts would sate their appetites at shopping malls. But now, with brick-and-mortar retail stores closing, food halls, offering a wide variety of ethnic cuisines and dining choices, have become destinations in themselves, with hundreds opening up around the country. Faith Salie looks at the changing face of dining, as former industrial spaces, a shuttered race track, and even shipping containers are being refitted into food stalls.