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Carbon Dioxide at NOAA's Mauna Loa Observatory reaches new milestone: Tops 400 ppm - 0 views

researchmatters.noaa.gov/...deatMaunaLoareaches400ppm.aspx

Climate global warming carbon dioxide noaa

shared by Timothy Swan on 15 May 13 - No Cached

The Earth's Carbon Reservoirs - 0 views

earthguide.ucsd.edu/...05_2.shtml

global warming carbon earth

shared by Timothy Swan on 24 Jan 13 - No Cached

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