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