Sky River of the Himalayas

Beneath the glaciers of Tibet’s 8,000-metre peaks, Chiru antelopes race at 100kph in the thin air of Tibet’s harsh high plateau, warmed by the coats that make theirs the world’s most valuable fleece.

We follow the gorge with its red pandas and isolated human settlements, emerging into India’s temperate forests where Gee’s golden langurs and macaques roam and clouded leopards hunt.

We enter the low, steamy plains of Bangladesh, where people must fight the river, forever threatening to tear away their homes and villages; but they work with nature too, making bridges from tree roots, catching fish helped by dolphins and otters, and learning to live beside poisonous snakes.