From: | Betty M |
Sent on: | Tuesday, December 6, 2011, 4:14 PM |
Hey CCTrs and Physics Enthusiasts!
Here are a couple of items that might be of interest.
Natural climate variability is extremely unlikely to have contributed more than about one-quarter of the temperature rise observed in the past 60 years, reports a pair of Swiss climate modelers in a paper published online December 4. Most of the observed warming—at least 74 percent—is almost certainly due to human activity, they write in Nature Geoscience.
Link to full article here:
http://www.scientificamerican.com/article.cfm?id=three-quarters-of-climate