The vast ice sheets of Greenland and Antarctica contain enough frozen water to lift the world's oceans dozens of metres.
sea level rise
MIAMI: Sea level rise is accelerating and could reach 26 inches (66 centimeters) by century's end, in line with United Nations estimates and enough to cause significant problems for coastal cities, a study said Monday. The past annual rate of sea level rise -- about three millimeters (0.1 inches) per year -- may more than triple to 10 millimeters per year by 2100, said the report in the Proceedings of the National Academy of Sciences (PNAS), a peer-reviewed US journal. The findings are "roughly in agreement with the…