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](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2017/05/050317_LH_noise-pollution_main_FREE.jpg?fit=860%2C460&ssl=1)
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