The Natural Sounds and Night Skies Division of the National Park Service (USA) provides assistance to
conservation
authorities in collecting baseline data for ambient acoustic and night sky quality in National Forests across the United States. The agency helps those groups in identifying source specific
noise
/light impacts and devising solutions to reduce, mitigate or prevent anthropogenic noise. Case examples associated with the Natural Sounds and Night Skies Division include Denali National Park, Noatak National Reserve, and Glacier Bay National Park.