They are building the biggest dam in history for $127 billion - there’s just one problem

High in Tibet, China is moving forward with plans for what could become the largest hydropower project ever built - a massive dam capable of generating enough electricity for hundreds of millions of homes. But this is far more than just an engineering story. The project sits in one of the most remote, dangerous, and politically sensitive regions in the world, where earthquakes, landslides, and fragile ecosystems could all threaten its future. And because the river flows toward India and Bangladesh, the dam could also give China enormous control over water that millions of people downstream depend on. This is the story of how the dam would work, why China wants it so badly, and why the rest of Asia is paying very close attention.