Northern China has been draining its groundwater faster than it replenishes for 40 years. Water tables fell two meters every year. The solution was the ocean. China just built a 14,500-kilometer chain of solar-powered reverse osmosis plants down its entire eastern coast. 340 facilities. One every 43 kilometers. They capture seawater, run it through co-located solar arrays, and pump the fresh water 1,500 kilometers inland. It generates more daily flow than the entire Yellow River. The largest water infrastructure project in history. 400 million people just secured their water supply, and dying aquifers finally get to heal.
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