Environment mapsPollution Changes in the Concentration of Nitrogen Dioxide in the U.S. from 2005 to 2014 December 20, 2016 Alex By Reddit user: crnaruka Related Posts:Countries Producing Most Carbon Dioxide MappedNO2 column density change (2005 - 2014)The Texas TriangleNew Jersey population changes (2005 - 2014)U.S. Population under 5 years of age percent change…The youngest counties in AmericaWatching carbon dioxide from spaceNitrogen balance on the landscape