Travel the entire length of the Sky, the world’s highest major river, as it flows from the Himalayan mountains down to the Indian Ocean, passing Asia’s biodiversity hotspots and affecting more than a billion people along the way.

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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.
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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.