Take a stroll down a busy street and the sounds are everywhere — and even more pernicious to your hearing than you might expect, considering that normal speaking volume registers just 60 decibels. Cars honking, sirens wailing? That’s 85 decibels of sound. An approaching subway train launches 100 decibels into the air.
Think it’s safer in the suburbs? The leaf blower: 85 decibels. The dog who decides to bark in the car: 110 decibels.
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