Last March the World Health Organization announced that there were 7 million premature deaths in 2012 that were a result of unclean air, which equals out to about one out of every eight deaths globally resulting from poor air quality. The 2014 Environmental Protection Index showed that the number of people breathing polluted air has grown from 606 million to 1.78 billion. The Atlantic magazine has combined data from two sources– the WHO’s 2014 air pollution in cities database and the EPI’s satellite measurements of worldwide pollution. The interactive map shows color-coded pollution throughout the world on both the city and national levels. | See the map and learn more about air pollution on The Atlantic