Podcast:Stuff You Should Know Published On: Tue Jun 10 2025 Description: All those to-go cups and food containers aren’t actually Styrofoam but those cups and Styrofoam are both forms of foam polystyrene, one of the rare materials that isn’t biodegradable. Which is a problem, because we make – and throw away – so much of it. See omnystudio.com/listener for privacy information.