The Nature of Things

Water on the Level (7x12)

Yayınlanma tarihi: Eyl 05, 1966

There has been great alarm recently over the declining level of water in bodies of water as enormous as the Great Lakes. This program examines the water cycle and analyzes some of the factors that cause water levels to vary: increasingly heavy use by industry and public; droughts; climatic changes; damming; and diversion.