This episode takes a look at the Colorado River and its impact on the lives of the people living in the Southwestern states. The story also looks at how human development has caused environmental degradation of the river such that the once mighty river doesn't drain into the sea anymore. (imdb)

Jupiter's gravitational force made it a wrecking ball when it barreled through the early solar system. But it also shaped life on Earth, delivering comets laden with water-and perhaps even the fateful asteroid that wiped out the dinosaurs. (imdb)

Does life exist outside this planet? The Viking lander will set down on Mars in July 1976 to try to find out just that. NOVA explores how life started on Earth and examines the Viking Lander being built in its germ-free room before starting its long journey. (youtube)

The film focuses on recent changes in the culture and society of the Cuiva, hunters and gatherers in a remote forest region of south-eastern Colombia, brought about through contact with Colombian settlers. (RAI Film)

The story honored the men who revolutionized medicine in the 19th century by the discovery of anesthesia. (imdb)

Washoe is a chimp more like a person: she talks with her hands. NOVA visits with Washoe and her teachers -- Professor Allen Gardner and Dr. Trixie Gardner -- to learn more about this unusual animal. (wgbh.org)

Nuclear fusion offers the promises of an unlimited, clean source of energy. But achieving fusion has proved one of the most difficult and elusive goals of the physicist. NOVA tells the story of the twists and turns and the international competition along the road toward the achievement of fusion; and details the recent breakthroughs which seem at last to have brought it within reach. (pbs.org)