Lisa Friedman, "New Research Links Air Pollution to Higher Coronavirus Death Rates," New York Times, April 7, 2020, https://www.nytimes.com/2020/04/07/climate/air-pollution-coronavirus-covid.html?campaign_id=54&emc=edit_clim_20200408&instance_id=17477&nl=climate-fwd%3A&regi_id=85089823&segment_id=24329&te=1&user_id=2f63e40afd2257c123e92e0925c9ab81.