December 8th, 2008 
Malvika Sampat 
Researchers speculate that during the Cryogenian Period, about 840 to 635 million years ago, advancing ice was stalled by the interaction of the physical climate system and the carbon cycle of the ocean, with carbon dioxide playing a key role in insulating the planet. (Credit: iStockphoto)From Science Daily:
ScienceDaily (Dec.…
Posted in Science News 
Tags: Ancient Earth, Carbon Cycle, Carbon Dioxide, Chain Reaction, Deep Freeze, Frozen Earth, Glaciation, Half Of The Time, Istockphoto, Key Role, Laurentians, Million Years, Physical Climate System, Present Day, Runaway Chain Reaction, Science Daily, Sciencedaily, Scourge, Snowball Earth, Uk Scientists 
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