Remember back in March and April of 2020 when there weren't as many cars on the road? That really did have an impact, though unfortunately it hasn't been enough to meet goals. And of course, there's the small matter of the fact that we only achieved that decrease as hundreds of thousands died, millions were ill (and we aren't sure how long effects will last for the "long haulers.") Definitely not a drop anyone would choose, but hopefully we can learn something from it, at least.
From a longer-term perspective, the planet didn't get any cooler: 2020 was effectively tied with 2016 for the hottest year on record.
