Peter Warshall lectures on a poetics of natural light. Warshall explains light and sight from a biologist's standpoint, showing how they are part of a several billion year process of evolution. He explicates the connections between survival and elements of light perception, including contrast, concealment, and color. Warshall sees art as a development of the uses of these elements in the animal kingdom, and relates the artist's and poet's search for beauty to that of the naturalist. Check out Naropa's audio archive at Archive.org.