Peace and quiet is becoming more elusive in U.S. wild areas

Human-made cacophony doubles volume of background noise in many places, study finds

Alcatraz Island

NOISE POLLUTION Alcatraz Island is a former prison now managed by the federal government as a protected natural area and historical site. Long-term audio recordings taken in places like this one are helping scientists understand just how much human noise affects natural places.

U.S. National Park Service

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