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Politics : Formerly About Advanced Micro Devices

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To: Elroy who wrote (301573)8/28/2006 4:54:08 PM
From: combjelly  Read Replies (1) of 1579769
 
"How did you get trends from Christ to 1000 AD????"

Tree rings and measuring carbon 12 to carbon 13 ratios in seashells are two methods for inferring temperatures. Some informed guesses can be made with ice cores. Records of wine production, glacier advancement, how far north certain animals and plants lived can give other information on temperature.
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