"In some ways, the dire lockdowns undertaken to stop Covid-19 have fast-forwarded us into an unlikely future—one with almost impossibly bold climate action taken all at once, no matter the cost.
Just months ago it would have been thought impossible to close polluting factories virtually overnight and slash emissions from travel by keeping billions at home. Now we know that clear skies and silent streets can come about with shocking speed.
The pandemic is a cataclysmic event so big and disruptive that it can be measured in the planetary metrics of climate change. As many as 2.6 billion metric tons of carbon dioxide emissions, about 8% of the estimated total for the year, will never be emitted into the atmosphere, according to estimates by the International Energy Agency. Pick any world-shaking event from 20th century history—none has produced a bigger decrease in emissions."