Duckweed covers the water on the Dianpu River in Minhang District, Shanghai, May 24, 2016. Rising temperatures have increased growth of aquatic plants that have turned the river green. (Photo/IC)
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Duckweed covers the water on the Dianpu River in Minhang District, Shanghai, May 24, 2016. Rising temperatures have increased growth of aquatic plants that have turned the river green. (Photo/IC)