Sound Ledger¹ (Regional Lifespans, Songbird Implants, Nature Sounds)

Audio culture by the numbers

13: The disparity, in years, of life expectancy for individuals living in Denver, Colorado, based on where they live, due to factors including noise pollution.

14.4: The weight, in grams, of a tiny, wireless, battery-free device that can be implanted in songbirds to aid scientific study

184: The percentage increase in overall health of individuals exposed to the sounds of nature

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¹Footnotes: Denver: Songbird: Nature:

Originally published in the April 5, 2021, edition of the This Week in Sound email newsletter (

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