There is the trash we throw away like plastics, styrofoam, cardboard and paper. There is the waste from humans as well as animals and the like. How we manage these things with sanitation, or don’t manage them properly, has effects on the environment, people’s health, and a myriad of other issues. To have this conversation on sanitation, because we aren't going to produce less waste anytime soon, making this issue an imperative, L. Joy brings professor Colin McFarlane to the front of the class.