The Last Time CO2 Was This High, Humans Didn’t Exist
[wpcol_2fifth id=”” class=”” style=””]NASA scientists react to 400 ppm carbon milestone
What the world needs to watch
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“Passing the 400 mark reminds me that we are on an inexorable march to 450 ppm and much higher levels. These were the targets for ‘stabilization’ suggested not too long ago. The world is quickening the rate of accumulation of CO2, and has shown no signs of slowing this down. It should be a psychological tripwire for everyone.” – Dr. Michael Gunson
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What the world needs to watch[/wpcol_3fifth_end]
Background image “Co2 USA 2003” by NASA AIRS
