As antelopes race in the thin air of the Himalayas, the highest major river on Earth flows from its Tibetan source. Follow along as nomads give way to farmers, and the river thunders into the Tsangpo, the world’s deepest and longest gorge.

Glide with the river as it flows past red pandas and remote human settlements on the Tsangpo Gorge to emerge into India’s temperate forests. Then discover lush Assam, with its tea plantations, iconic one-horned rhinos, and the last wild pygmy hogs.

Enter the steamy plains of Bangladesh, where people must fight the river, forever threatening to destroy their homes. See how they work with nature too, making bridges from tree roots and catching fish with the help of dolphins and otters.