2,000: distance in kilometers greater than which cetaceans can communicate
63: percent of protected natural spaces where human activity doubles background-noise levels
21: percent of protected natural spaces where human activity increases background-noise levels tenfold
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¹Footnotes
Cetaceans: theconversation.com. Protected: theatlantic.com
Originally published in the June 13, 2022, edition of the This Week in Sound email newsletter. Get it in your inbox via tinyletter.com/disquiet.