Reading Time: 3 minutes This article originally appeared on the UN Environment website. The Copernicus Sentinel-5P satellite, operational since early 2018, is starting to return high resolution maps of air polluting gases that are invisible to the human eye. Amongst the first images released by mission scientists were plumes of nitrogen dioxide flowing from power plants as well as traffic-choked cities in Europe. Sentinel-5P, … Continue reading Invisible air polluting gases revealed by satellite imagery