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U.S. Forests Soak Up Carbon Dioxide, but for How Long?: Scientific American
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www.scientificamerican.com/article.cfm
climate
change
global
warming
carbon
dioxide
topic5
shared by
John McMurtry
on 07 May 12
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Carbon dioxide at NOAA's Mauna Loa Observatory reaches new milestone: Tops 400 parts pe...
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www.sciencedaily.com/...130510180610.htm
greenhouse
globalwarming
ecology
topic5.2
co2
shared by
John McMurtry
on 11 May 13
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