Dangerously High Air Pollution Levels Found in Most U.S. National Parks
By E360 Digest Photo by Jacob W. Frank/NPS
Some 85 percent of U.S. national parks have levels of air pollution that are hazardous to human health, according to a new report from the National Parks Conservation Association. Some of the country’s most popular parks — such as Sequoia, Kings Canyon, and Joshua Tree — experienced up to two months of dangerously high ozone levels, The Guardian reported.
06/12/19