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Wednesday, September 05, 2007
Carbon Dioxide: The Houdini of Gases

By Alan Siddons and Joe D’Aleo

How long does carbon dioxide linger in the air? This is actually an important question, a question of so-called residence time. As previously discussed on this blog, studies compiled by geologist Tom Segalstad rather convincingly show that earth’s biological and chemical processes recycle CO2 within a decade, meaning that a CO2 molecule you’re exhaling at the moment is bound to be captured by a plant or a rock or the ocean just a few years from now. Yet the Intergovernmental Panel on Climate Change and other authorities insist that carbon dioxide generally remains in the air for up to 200 years.

Who to believe? We’ll present some evidence here and you be the judge. See also this recent posting.


Posted on 09/05 at 04:28 PM
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