Polystyrene, also known as Styrofoam, is used in disposable cups and take-out food containters, packing peanuts, trays, and egg cartons.
Fast-food chains, including McDonald's, phased out polystyrene for sandwich containers more than 20 years ago. Ozone layer-depleting CFCs haven't been used to make Polystyrene since the late 1980s. But environmental groups dislike the material because of it involves toxic Styrene, labeled a possible human carcinogen by the EPA. The manufacture of Polystyrene is known to pollute nearby air and water. This type of plastic isn't commonly accepted by municipal recycling programs.
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