Air pollution and climate change impacts can have outsized effects on the National Park System, as well as lesser noticed but just as concerning effects. But are those impacts spread across the entire park system, or clustered around a few? Back in 2019 the National Parks Conservation Association looked at how air pollution and climate change were impacting parks. They have updated that study with the latest data from the National Park Service, and the current state of affairs remains concerning. To discuss NPCA’s findings, we’ve asked Ulla Reeves, the interim director of NPCA’s Clean Air Program to join us.