Yancheng, China | On China’s Yellow Sea, near the city of Yancheng north of Shanghai, the water laps against mudflats in thick, brown waves, carrying sediment from some of Asia’s busiest industrial regions.
Piped from the shoreline into a desalination plant ringed by wind turbines and solar panels, the murky water is strained, filtered and treated until it emerges clear enough to bottle and drink.
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