Why we are 350: “If humanity wishes to preserve a planet similar to that on which civilization developed and to which life on Earth is adapted, paleoclimate evidence and ongoing climate change suggest that CO2 will need to be reduced from 385 ppm [in 2008] to at most 350 ppm.” -- Dr. James Hansen, 2008 Publication, Goddard Space Flight Center
CO2 is 421 ppm in 2023 - Latest CO2 Values at the Mauna Loa Obsevatory
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