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Politics : View from the Center and Left
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To: Suma who wrote (16966)4/21/2006 12:08:37 PM
From: carranza2  Read Replies (2) of 541754
 
There is no doubt that the Northern Hemisphere has warmed.

The causes of the warming, and the extent that each such cause, including human activity, has contributed to it is the cause of a huge and roaring scientific controversy which is far from resolved.

We may be in a natural warming cycle exacerbated by many factors including added CO2, methane, water vapor, etc. No one with an honest bone in their body can claim to know the extent to which human activity as opposed to natural cyclical forces has contributed to the warming.
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