Watch: 2020 was earth’s quietest period in decades. Here’s why
Seismologists from 33 countries reported a drop of up to 50% in ambient noise in 2020.
Earth had its quietest period in decades due to reduced human activity in 2020 https://t.co/PUwhipENeu pic.twitter.com/UFug68RM2I
— Reuters (@Reuters) February 19, 2021