Noise in 98 percent of Manhattan’s public space exceeds healthy levels.

study co-authored by Columbia University

An estimated 30 million Americans are exposed to dangerous noise levels on a regular basis, an increase of 10 million from just a few years ago.

American Speech-Language-Hearing Association (ASHA)

In 2017, human-caused sounds at least doubled natural noise levels in 63% of protected lands in the United States, such as parks and forests.

National Park Service