Clever! In order to compare indoor and outdoor dispersal rates for the movement of gases and particles through air, collaborators will participate in a classroom experiment. Set up a circular grid and set students on lines that are spaced in two-meter increments from the center. Stand in the middle and peel an orange, having learners raise a hand when they can smell the oils and recording the time. The experiment is then repeated outdoors. The intent is to demonstrate that in an enclosed area, air pollution can be concentrated. Make sure to bring extra oranges to serve at the end of the lesson!