Glenn Juday is a professor of forest ecology in the department of forest sciences and the School of Natural Resources and Agricultural Sciences at the University of Alaska at Fairbanks. For many years he has been studying white spruce trees near the Tanana River basin. His research interests also include tree-ring studies, biodiversity under forest management systems, climate change and forest growth, old-growth forest ecosystems and ecology, natural controls of biodiversity, wilderness and natural area management, forest development and ecosystem life history, fire and climate change, and long-term environmental monitoring.