News & Stories Environment How free-roaming bison in Yellowstone National Park are reshaping the ecosystem September 11, 2025 / 8:49 am A new study finds free-roaming bison in Yellowstone National Park are reshaping the ecosystem. It’s not always for the better.NPR’s Nate Rott reports.This article was originally published on WBUR.org. Why you can trust KUOW Recommended Stories Policies meant to limit air pollution allow toxic dumping in Salish Sea April 01, 2026 Why allergy season in the Northwest is nothing to sneeze at April 01, 2026 Mystery orcas return to Seattle area March 27, 2026