China's New Great Wall: Water Management

Engineers are working on a huge water-diversion project designed to carry water from China’s wet southern regions to Beijing and the country’s parched north. The $62 billion project will essentially replumb the entire country by creating a huge network of canals, tunnels and aqueducts, in what experts say would be an engineering feat of almost unprecedented audacity. “This is on a par with the Great Wall, a project essential for the survival of China,” said the project manager.