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Evidence Emerging on Ancient Heat Waves

As the temps in the Western U.S. soar to new records, it's probably very easy for us to think apocalyptic thoughts about the impact of global climate change. Look - it's clearly getting hotter! As I've mentioned recently, Greenland is melting quite rapidly, which is creating a unique opportunity to view evidence on the past. According to BBC News, a new article in the journal Science is showing that Greenland may well have been a lush, forested place a mere 450,000 years ago. If you think back to the tree ring data that Al Gore uses in An Inconvenient Truth, which shows a natural series of peaks and valleys over the past 400,000 years - correlating to increases in temp/CO2 and then mini ice ages - then this new data should jump out at you. The tree rings don't go back farther than 400k years. Hmmm. Might that be because of a major global climate shift? To me, an interesting question, and one that I still maintain we'll see played out in the next 50 years...




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This page contains a single entry from the blog posted on July 6, 2007 12:26 PM.

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