1. M. A. Sutton , Philos. Trans. R. Soc. London Ser. A 378, 20190315 (2020).
2. Intergovernmental Panel on Climate Change (IPCC), “Summary for policymakers” in Climate Change 2021: The Physical Science Basis. Contribution of Working Group I to the Sixth Assessment Report of the Intergovernmental Panel on Climate Change, V. Masson-Delmotte , Eds. (Cambridge Univ. Press, 2021); www.ipcc.ch/report/ar6/wg1/downloads/report/IPCC_AR6_WGI_SPM.pdf.
3. Abating ammonia is more cost-effective than nitrogen oxides for mitigating PM
2.5
air pollution
4. World Health Organization (WHO), “WHO global air quality guidelines: Particulate matter (PM2.5 and PM10), ozone, nitrogen dioxide, sulfur dioxide, and carbon monoxide” (WHO, 2021).
5. The Human Creation and Use of Reactive Nitrogen: A Global and Regional Perspective