Snowball Earth
Posted by aparajita on 2 March, 2009
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This item was filled under [ Snowball Earth ]
It has been thought that the snowball earth is a hypothesis where it’s said that the earth was entirely covered by ice during parts of the Cryogenian period, from 790 to 630 million years ago. How long it existed is still remains controversial. By the way it describes the coldest global climate imaginable. The global [...]