https://www.sciencedaily.com/releases/2021/04/210428140906.htm

The study led by University of Illinois Urbana Champaign civil and environmental engineering professor Christopher Tessum is published in the journal Science Advances.

"Community organizations have been experiencing and advocating against environmental injustice for decades," Tessum said. "Our study contributes to an already extensive body of evidence with the new finding that there is no single air pollution source, or a small number of sources, that account for this disparity. Instead, the disparity is caused by almost all of the sources."