China has approved the construction of the world’s largest hydropower dam on the lower reaches of the Yarlung Zangbo River, the Tibetan name for the Brahmaputra, near the Indian border. The $137 billion project, described as the world's biggest infrastructure undertaking, has raised concerns in downstream nations India and Bangladesh.

China has approved the construction of what will be the world's largest hydropower dam, kicking off an ambitious project on the eastern rim of the Tibetan plateau that could affect millions downstream in India and Bangladesh.

Beijing has approved plans to dam a gorge in the Himalayas that is three times as deep as the Grand Canyon, despite concerns about the impact on Tibet and India.