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Oldest DNA ever recovered suggests earth was warmer than previously believed

s probably between 10C in summer and -17C in winter. Also, the reduced glacier cover in that region means the global ocean was probably between one and two metres higher during that time compared to current levels.

Sharp, who has been a supporter of the idea that the current global warming trend is human induced, believes the new research offers evidence that climate warming on the current scale is possible through natural conditions.

However, he cautions that this research does not prove the current global warming trend is not human induced.

"It could mean that our current warming is the result of both natural processes and human influences, and we may be heading for even bigger temperature increases than we previously thought," Sharp said.


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Contact: Ryan Smith
ryan.smith@ualberta.ca
780-492-0436
University of Alberta
5-Jul-2007


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