Reversal of trends in global fine particulate matter air pollution

Chi Li, Aaron van Donkelaar, Melanie S. Hammer, Erin E. McDuffie, Richard T. Burnett, Joseph V. Spadaro, Deepangsu Chatterjee, Aaron J. Cohen, Joshua S. Apte, Veronica A. Southerland, Susan C. Anenberg, Michael Brauer & Randall V. Martin, Nat Commun