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Politics : Formerly About Advanced Micro Devices -- Ignore unavailable to you. Want to Upgrade?


To: TopCat who wrote (669479)8/27/2012 1:04:37 PM
From: puborectalis  Read Replies (1) | Respond to of 1578942
 
sea ice became a feature of the Arctic by 47 [million years before the present], following a pronounced decline [in carbon dioxide concentrations]… Ice was apparently most widespread during the last 2–3 million years, in accordance with Earth's overall cooler climate. Since modern humans are just 200,000 years old, the ice might as well be eternal.