CO2 emissions fall
Like NO2, carbon dioxide emissions (CO2) have also been slashed in the wake of the COVID-19 crisis. When economic activity stalls, so do CO2 emissions — in fact, the last time this happened was during the 2008-2009 financial crisis. In China alone, emissions have fallen by around 25% when the country entered lockdown, according to Carbon Brief. But this change is likely to only be temporary.