Reveals the facts about the Ganges, a river sacred to Hindus. Follow it from its source high in the Himalayas, southeast through India and into Bangladesh, where it empties into the Bay of Bengal. Flowing through one of the most densely populated areas in the world, its banks are also the site of shrines, temples, and holy cities, including Varanasi, one of the oldest continuously inhabited cities in the world. Pollution of the river and the threat to wildlife species are also examined.