China just took another step toward easing its water crisis. Water began flowing along the Eastern Route of the unassuming sounding South-North Water Diversion Project a few days ago. The project is perhaps the largest and most expensive infrastructure enterprise in the history of the human race. It will draw water from China’s fertile south to the parched north, through three sets of canals and tunnels called the Western, Middle, and Eastern routes. Why? Because northern China is dying.