12/6/2012

Ocean levels are up 11 millimeters over 20 years because of melting ice, with the fastest rates of loss in Greenland and western Antarctica, according to a new study. "Prior to now there'd been 30 to 40 different estimates of how the ice sheets are changing ... So we've brought everybody together to produce a single estimate, and it turns out that estimate is two to three times more reliable than the last one," said lead author Andrew Shepherd of Leeds University.

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