Thursday, July 5, 2007

Oldest DNA ever recovered suggests earth was warmer than previously believed

I have no Idea what it means, other than we're still learning.

From EurekAlert:

The DNA samples suggest the temperature of the southern Greenland boreal forests 450,000 to 900,000 years-ago was 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.