
What happened when engineers terraced a 640,000 square kilometre plateau whose yellow silt had been choking the world's muddiest river for millennia, and the sediment load fell by nearly 90 percent within two decades?
On China's Loess Plateau, two decades of terracing, tree planting, and check dams cut the Yellow River's sediment load by close to 85 percent — reshaping the world's muddiest river, its delta, and the water balance of a region the size of France.














