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Atmospheric Co2

Global CO2 Levels Top Unprecedented Milestone

The Huffington Post | Nick Visser | Posted 05.06.2015 | Green

Average global levels of carbon dioxide stayed above 400 parts per million, or ppm, through all of March 2015 -- the first time that has happened for ...

Are Deserts Getting Greener?

Posted 06.06.2013 | Green

From Mother Nature Network's John Platt: Increased levels of atmospheric carbon dioxide may have contributed to a gradual greening of some desert r...