Frozen continent may not be immune to global warming
Jesse Allen, Robert Simmon/NASA Earth Observatory
Antarctica is a land of extremes: the driest, windiest, coldest place on Earth. The ice sheet that blankets the continent is, on average, 2 kilometers thick and covers nearly 14 million square kilometers. Antarctica is so remote and so isolated that as recently as 2007 scientists thought that it might be unaffected by global warming.