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400 PPM Atmosphere

400 PPM Descending.

Shan Wells | Posted 07.15.2013 | Denver
Shan Wells

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Atmospheric CO2 To Pass Major Milestone

The Huffington Post | James Gerken | Posted 04.29.2013 | Green

Scientists monitoring global atmospheric carbon dioxide concentrations report that, for the first time in human history, CO2 levels could soon rise ab...