India's greatest river, the Ganges, is one of the world's dirtiest. The river's revered by Hindus - but it is also the sewer that carries away the waste from 450 million people. Show more
Discover 11,128,835 listings and 282,361 playable programmes from the BBC
India's greatest river, the Ganges, is one of the world's dirtiest. The river's revered by Hindus - but it is also the sewer that carries away the waste from 450 million people. Show more