Guests: Dr. Bob Gresswell emeritus research biologist and affiliate assistant professor in the Department of Ecology at Montana State University. Also a research biologist for the USGS at the Northern Rocky Mountain Science Center

Topics Discussed: The near extinction of the Yellowstone Cutthroat Trout. The suppression and removal of invasive Lake Trout. The rebound and future of Cutthroats in Yellowstone and the ecosystem.