The US saw cleaner air during COVID-19 lockdowns, but some pollutants persisted
▻https://massivesci.com/notes/air-pollution-particulate-matter-covid-lockdown
Nitrogen dioxide levels dropped due to a sharp decrease in passenger cars on the road
The US saw cleaner air during COVID-19 lockdowns, but some pollutants persisted
▻https://massivesci.com/notes/air-pollution-particulate-matter-covid-lockdown
Nitrogen dioxide levels dropped due to a sharp decrease in passenger cars on the road