
The story of the river is taken up in this episode as it leaves the Himalayan foothills and enters the swamplands known as the Terai, here there are grasses that can grow 4 metres a year – so large they can even hide elephants.
BBC Ganges 1: Daughter of the Mountains

Ganges is a nature documentary series for television on the natural history of the River Ganges in India and Bangladesh. As well as the animals and habitats, it also features the cultures, traditions and religions found along the river.
The Silk Road Series 8/16: A Heat Wave Called Turfan

The expedition continues its journey westwards through Turfan, The Land of Fire, visiting a dried-up lake 150 metres below sea level, and the Fire Mountains on the way.
Devour the Earth

Here is a hard hitting documentary from the Vegetarian Society in England, it was written by Tony Wardle and is narrated by Paul McCartney (the ex-Beatle).
The Slow Poisoning of India

This is a short documentary made by The Energy and Resources Institute in New Delhi, with reports on the effects of pesticide use from around the country. The results are, I think, unambiguous and telling.
The Silk Road Series 2/16: A Thousand Kilometres Beyond The Yellow River

This episode sees the expedition crossing first the Yellow River, with its goat-skin rafts and giant waterwheels, and entering the Gobi desert along the He-xi corridor, where it visits some of the main citadels along the route.