Our Sound and Light Ecology Team, a collaboration between C.S.U. and the National Park Service,  published a paper in the May 5 issue of Science, led by postdoctoral researcher Dr. Rachel Buxton, documenting noise pollution in U.S. protected areas. We analyzed millions of hours of sound measurements from 492 sites around the continental U.S. and provided predictions of existing sound levels, estimates of natural sound levels, and the amount that anthropogenic noise raises sound above natural levels, which is considered noise pollution.  We found that noise pollution was twice as high as background sound levels in a majority of U.S. protected areas, and caused a tenfold or greater increase in noise pollution in 21 percent of protected areas.  See CSU press release for more details.

Science Paper: Noise Pollution is Pervasive in U.S. Protected Areas