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Rapid warming in the Arctic is creating a new and fast-growing pool of fresh water in the Arctic Ocean. Measuring at least 7500 cubic kilometres, it could flush into the Atlantic Ocean and slow the Gulf Stream, bringing colder winters to Europe. The water is mostly coming from melting permafrost and rising rainfall, which is increasing flows in Siberian rivers that drain into the Arctic, such as the Ob and Yenisei. More comes from melting sea ice. [Source: New Scientist]
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