NOVA premieres on public television with a behind-the-scenes look at the making of a nature film. Oxford Scientific Films Unit shows how it tackles such problems as filming a wood-wasp laying its egg inside trees, etc.
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.