Get your mind out of the gutter … and into the sewer. As re-opened colleges continue report bad news about Covid-19, the University of Arizona reported some good news this week. They managed to stop a coronavirus spread before it started. “The university said it pulled this off by combining more common forms of coronavirus mitigation, swab testing and contact tracing, with a more exotic one: analyzing sewage.” How the University of Arizona used No. 2 to solve its No. 1 problem. Lower learning is the new higher learning.