Richard Dawkins explains how microscopic algae called Diatoms uniquely evolved in Yellowstone Lake. Download Quicktime version (720p HD): cdn.cloudfiles.mosso.com Get the RDF TV podcast through iTunes! itunes.apple.com If you enjoy the video, and would like to help us make more videos like this, please consider donating $1 (or any other amount you'd like) to The Richard Dawkins Foundation for Reason and Science: richarddawkinsfoundation.org During Richard Dawkins' 2009 American tour, we ...