Beyond the devastating health threat caused by the coronavirus, the world's economy has been slowed to a crawl for months now. That pause in economic output has brought about some profound changes, including significant reductions in soot, particles in the air and many other sources of pollution. In this episode of The Maine Question, Sean Birkel, Maine State Climatologist and a research assistant professor at the University of Maine Climate Change Institute, examines the changes that this unfortunate experiment has created.