Rules taking effect in California ban cups, clamshells and other food ware made from expanded polystyrene foam unless companies meet a high recycling target.

EDITOR'S NOTE: A previous version of this video incorrectly stated that Styrofoam is a brand owned by The Dow Chemical Company. In fact, DuPont de Nemours Inc. took over the trademark in 2019.

Chances are, if you've purchased takeout, you may have mistakenly called the to-go container "Styrofoam." But did you know ...