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Antarctic fossils paint a picture of a much warmer continent. Insects, ferns flourished, then flickered out millions of years ago as the tundra retreated.
An abrupt and dramatic climate cooling of 8 degrees Celsius, over a relatively brief period of geological time roughly 14 million years ago, forced the extinction of tundra plants and insects and tranformed the interior of Antarctica into a perpetual deep-freeze from which it has never emerged.
The international team of scientists headed by David Marchant, an earth scientist at Boston University and Allan Ashworth and Adam Lewis, geoscientists at North Dakota State University, combined evidence from glacial geology, paleoecology, dating of volcanic ashes and computer modeling, to report a major climate change centered on 14 million years ago. The collaboration resulted in a major advance in the understanding of Antarctica's climatic history.
More support for the belief that the current climate change is just the Earth recovering from the last ice age.