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http://www.nature.com/news/2004/040906/full/040906-10.html Scientists had speculated that the whole ice age might have been triggered by an abrupt temperature change, perhaps when a rapid warming period melted a substantial part of the Greenland ice sheet. This in turn would have diluted the North Atlantic with fresh water, damping down the ocean currents that bring warmer water to that area and plunging the area into a deep freeze. The NGRIP team now suggests that the ice age started much more gradually and was not linked to a fast glacial melt, even though the ice shows a hitherto unrecognized warm spell 115,000 years ago. The core also reveals that the North Atlantic climate was stable during the last interglacial period, despite being about 5 °C warmer than today. "This provides an analogue for our possible future climate warmed by atmospheric pollution," says Kurt Cuffey, a climatologist at the University of California, Berkeley.
"Terrorist or tyrant, few may come to the Truth that both are poor choice."
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