Unexpected slowdown of US pollutant emission reduction in the past decade

Jiang, Z., B. McDonald, H.M. Worden, J.R. Worden, K. Miyazaki, Z. Qu, D.K. Henze, D.B.A. Jones, A. Arellano, E.V. Fischer, L. Zhu, and F. Boersma (2018), Unexpected slowdown of US pollutant emission reduction in the past decade, Proc. Natl. Acad. Sci., 201801191, doi:10.1073/pnas.1801191115.