A British bus company is testing a new secret weapon to reduce polluting emissions - sheep urine. Stagecoach has fitted a bus in Winchester with a tank containing the waste, reports the Guardian. The urine is sprayed into exhaust fumes to reduce emissions of harmful nitrous oxides. Andrew Dyer, managing director of Stagecoach South, said: "It is a novel way of reducing pollution but we believe it will work. "This is the latest in green technology and we believe it will help make our cities better places to be for the public." The scheme is backed by Hampshire county council...