Containers made from Styrofoam or expanded polystyrene (EPS) foam are not safe to use in a microwave, unless they have a microwave-safe label. They may leach chemicals into food, which could increase ...
Feb. 10, 1957: The first food cooler made from styrofoam appears, 16 years after Dow Chemical scientists invented extruded polystyrene foam. Note the small “s.” It indicates the generic compressed ...