Walter Cronkite describes the wonders of Yellowstone National Park, including the park's microbial world and how the extreme environment of the park's hot springs may serve as a model for the possibility life on other planets. The video podcast of Yellowstone Revealed is presented by the American Society for Microbiology (www.asm.org) and the World Foundation for Environment and Development (www.wfed.org).

Walter Cronkite reviews the history of Yellowstone National Park, discusses the microbe that led to the Polymerase Chain Reaction technique used for fingerprinting DNA, and parallels Costa Rica to Yellowstone's hot springs as areas of important, but still largely unexplored, biodiversity. The video podcast of Yellowstone Revealed is presented by the American Society for Microbiology (www.asm.org) and the World Foundation for Environment and Development (www.wfed.org).