
U.S. EPA @EPA
From 1970 to 2017, the combined emissions of the 6 key air pollutants dropped by 73%, while the US economy grew more than 260% and the population continued to expand. #AQAW2019 https://t.co/Ho6g6Y6XrC@ https://t.co/X0raBaFj13 — PolitiTweet.org