Quote:
Originally Posted by TheEnemy
That wasn't what I asked, in the comming decades what do you think the atmosphere will stabilize at by the time we shift our energy sources over? 500, 600, 700ppm?
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I don't think it's a matter of "we" shifting energy sources, because "we" won't. Current fossil-fuel burning will continue until it triggers feedbacks such as release of methane clathrates, sending atmospheric CO2 levels into the 2000 ppm range. At which point most vertebrate life (including all humans who haven't moved to orbital habitats or Mars colonies) will become extinct.