100 Greatest Discoveries - Origins And Evolution

This show attempts to explain our deep psychological questions such as, why we exist, why we try to stay alive and how we try to understand planets, other ecosystems, environment and species. From explaining the misconceived bacterial sludge to deep sea chemosynthesis, or from the theory of comets, volcanoes and an explosion bigger than all nuclear forces, this documentary, hosted by Bill Nye, is an important summary of popular and common science theories. This documentary discusses such topics as Charles Walcott's analysis of the Burgess Shale; the Linnaean classification system; Darwin's theory of natural selection; Donald Johanson's "Lucy"; Mary Leakey's Laetoli footprints; and Michel Brunet's Toumai skull."