Melting ice sheets in Antarctica and Greenland could overtake mountain glaciers as the main contributors to rising sea levels, US scientists say.
A study lasting nearly 20 years has revealed that huge amounts of melted ice are pouring into the oceans.
This extra volume of water is probably surpassing that from mountain glaciers and ice caps, which have also been disappearing over the same period of time. Eric Rignot, of Nasa's Jet Propulsion Laboratory in Pasadena and the University of California at Irvine, said: "That ice sheets will dominate future sea level rise is not surprising – they hold a lot more ice mass than mountain glaciers.
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