A coast-to-coast picture of America’s cacophony of sounds

New National Park Service map draws the United States' summer soundscape

Sound map

SOUNDSCAPE  According to a new map created by the National Park Service, the eastern half of the United States is louder than the western United States.

NPS Natural Sounds & Night Skies Division

An ambitious National Park Service project exploits computer algorithms to predict the loudness of a typical summer day from coast to coast.