A new report has called for swift action after it revealed that a full 97 percent of National Parks have "significant or unsatisfactory levels of harm" from air pollution. The survey, carried out by the National Parks Conservation Association, provides an update from the 2019 Polluted Parks report and while it reveals "modest improvements," it's clear that there is still work to be done.
The NPCA names air pollution and climate change as "some of the most serious threats" to the health of National Parks today, in addition to wildfires, drought, sea level rise and invasive species. California's parks top the list of the 10 most polluted National Parks with parks in New Mexico, Texas, Colorado and Indiana also making the list.
