Weighing the Antarctic ice sheet

One of the last big unknowns in the global climate equation is Antarctica. How stable is the Antarctic ice sheet? More than a mile thick, on average, it locks up 70 percent of the Earth's fresh water.

Sea levels set to rise by up to a metre: report

Sea levels are set to rise by up to a metre within a century due to global warming, a new Australian report said Monday as it warned this could make "once-a-century" coastal flooding much more common.

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