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Piercing the haze

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Science  14 Sep 2018:
Vol. 361, Issue 6407, pp. 1060-1063
DOI: 10.1126/science.361.6407.1060

Figures

  • Surprisingly high levels of ammonia appear to play a role in fueling the smog that envelops Salt Lake City in the winter.

    PHOTO: JEFFREY D. ALLRED/THE DESERET NEWS/AP
  • CREDITS: (GRAPHIC) N. DESAI/SCIENCE; (DATA) S. K. KHAROL ET AL., GEOPHYSICAL RESEARCH LETTERS 45, 1157 (2018); U.S. GEOLOGICAL SURVEY
  • GRAPHIC: N. DESAI AND A. CUADRA/SCIENCE
  • Managing ammonia sources on farms, such as this heap of chicken manure in Maryland, could be key to limiting emissions.

    PHOTO: EDWIN REMSBERG/ALAMY STOCK PHOTO

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