In this unit, you learned or will learn how air pollution move through the atmosphere. The movement of air pollution across states, countries, and the globe creates some interesting policy issues. For example, states have sued power plants in other states for air pollution that travels across their borders and degrades their air quality. Do you think communities, states, or other countries should be able to sue for pollution crossing their borders? If so, how much proof should the plaintiff need to prove that the pollution is coming from the defendant? Or you can just discuss any case that you are aware of in your community or have read/researched regarding this type of lawsuits.