Air quality improves in U.S. as coronavirus empties highways

U.S. air quality has improved since the coronavirus crisis emptied the roads of traffic, giving the country a futuristic glimpse of the clearer skies that could come with an electric vehicle fleet, according to preliminary findings by National Oceanographic and Atmospheric Administration labs. Using satellites, airplanes and ground monitors, NOAA researchers say they have observed a 25% to 30% reduction in smog-causing nitrogen oxide emissions along with big cuts in volatile organic compounds.