This thought was posted on Thinkaloo on 18 February 2008 by member ben
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Carbon dioxide is a greenhouse gas that exists in the earth's atmosphere. CO2 however becomes solid at temperatures below -78 °C. In its solid state, carbon dioxide is commonly called dry ice. I thought the following. If scientists can find a way to cool atmosphere at that level then large chunks of it can be removed from the atmosphere. CO2 at a solid state will just fall from the sky like dry ice due to gravity!
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