A return to safe atmospheric concentrations of CO2
Many scientists, including NASA's Jim Hansen, are now advocating for a a swift return to CO2 levels of no higher than 350ppm. Individuals and organizations around the world have taken up his call, including 350.org.



Source: 350.org

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Anthropogenic Climate Change »Anthropogenic Climate Change
Responding to climate change? »Responding to climate change?
Immediate action required »Immediate action required
Who should do what? »Who should do what?
Global community response to climate change? »Global community response to climate change?
Goals for the Copenhagen Treaty »Goals for the Copenhagen Treaty
A return to safe atmospheric concentrations of CO2
what does 350 mean? »what does 350 mean?
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