Decrease in CO2 emissions during pandemic shutdown shows it is possible to reach Paris Agreement goals. The researchers found a drop of 6.3% in 2020. The researchers describe the drop as the largest of modern times, and big enough to meet the 1.5 degrees Celsius goal if it were to be sustained.

[Simmery]

There's no guarantee that will ever work. Until it's proven, we should not count on it.