Sound Ledger¹ (Tourism, Decibels, Havana)

Audio culture by the numbers

3000: Total number of individual tourists allowed each year at Kronotsky Nature Reserve on the Russian coast

30.6: Decline, in decibels, of noise pollution in Mumbai, India, between 2015 and 2021

30: Rough estimate, in millions of U.S. dollars, to treat “Havana syndrome,” allocated out of a $768 billion defense spending bill signed into law by President Joe Biden

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¹Footnotes: Russia: Mumbai: Havana:

Update: I accidentally left out the word “millions” in the Havana entry when I first published this. And I added the word “allocated” for clarification.

Originally published in the January 3, 2022, edition of the This Week in Sound email newsletter (

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