Andy Hansen is a professor emeritus of ecology at at Montana State University and a leading scientist who studies the health of the Greater Yellowstone Ecosystem. He is the Former director of the Landscape Biodiversity Lab at Montana State University in Bozeman and studied human impacts, climate change, land use, and wildlife habitat connectivity in and around Yellowstone for over three decades.
There’s a major reason that Yellowstone National Park attracts close to 5 million visitors every year. Yes, there are spectacular…
Yellowstone grizzlies, photo by Tom Murphy
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