Thread: Nasa on Global Warming: It's the Sun.
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Old 03-20-2007, 01:55 AM   #28 (permalink)
baloney_detector
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Quote:
Originally Posted by gmeyers1944 View Post
Most CO2 occurs naturally. Man's contribution is almost non-existent.
Then...ummmm...why was the atmospheric concentration of carbon dioxide in 2005 (379 ppm) greater, by far, than the natural range over the last 650,000 years (180 to 300 ppm), as determined from ice cores?


(Source: http://www.ipcc.ch/SPM2feb07.pdf)