  Follow the chronology of organic evolution through three billion years-from the orgins of life to the appearance of Homosapiens. The program discusses the development of life in water through the Paleozoic Era, the penetration of the land environment by vegetable and animal life, and the rise and fall of dinosaurs in Mesozoic Era. Finally the program describes the Cenozoic Era, when mammals became a major life form on earth. (70 min) |