May 11, 2021--Co-hosts Tim Bray and Bob Spies talk with Dr. Sarah Kupferberg, an aquatic ecologist doing research at the University of California's Angelo Reserve in northern Mendocino County. Dr. Kupferberg has studied the food web in the South Fork of the Eel River, including the yellow legged frog. They explore the life history of these frogs, how they use the riverine habitat, and their population status.