Carbon Dioxide
We are now above 400ppm.

*

350 ppm is a widely recognized upper limit number: see 350.org

Current number: co2.earth

 

Immediately related elementsHow this works
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Global Warming and Climate Change (CEC) (SER) (GCC) »Global Warming and Climate Change (CEC) (SER) (GCC)
Impacts »Impacts
Greenhouse Gases »Greenhouse Gases
Carbon Dioxide
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