
Image caption
Industrial smog blacks out homes adjacent to North Birmingham Pipe Plant. This was the most heavily polluted area of the city. 1972. Photo: LeRoy Woodson, Courtesy: U.S. National Archives via Wikimedia Commons.
Industrial smog blacks out homes adjacent to North Birmingham Pipe Plant. This was the most heavily polluted area of the city. 1972. Photo: LeRoy Woodson, Courtesy: U.S. National Archives via Wikimedia Commons.