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			They (climatologists) can quantify the change (or rather, the rate of change of temperature, which is the real worry).  I'm not sure about the attribution, but I'm pretty sure that they can make correllational proofs.  I'll see what I can find on the intarnetwebs.
		 
		
		
		
		
		
		
			
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				Don't Panic
			 
		
		
		
		
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