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Sirens and the city (photo: Benjamin Kanter/Mayoral Photo Office)
A beautiful, clear April evening in Manhattan. No traffic, which is down 84% overall in the city, says StreetLight. Out of nowhere a screeching siren pierces the air. Many minutes later an ambulance appears—SeniorCare—blaring a siren that measures 124 decibels, higher than a jet takeoff or a thunderclap, the loudest natural sound on earth. The few people on the street cover their ears in pain as
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