Dana Nuccitelli Oct 24
Replying to @crazybabytcob @AOC
Atmospheric CO2 normally fluctuates between 180 and 280 ppm. We're currently at 410 ppm, trying desperately to limit the rise below 510 ppm, ideally targeting 350 ppm in the very long-term if we find some good ways to pull CO2 out of the atmosphere. Your Tweet is irrelevant.