Quote:
Originally Posted by redpoint5
Yes, on Earth.
800,000 years ago CO2 concentration reached a historic low of about 180 ppm which is just barely enough to support plant life.
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Oh look, you're answering for freebeard. Did you two come to a consensus via Zerohedge and/or the comic strip anti-climate anti-scientist?
It's a good thing that burning fossil fuels inadvertently saved humanity from the alleged impending plantapocalypse ... from 800,000 years ago. So, we should burn more fossil fuels so that we can get to the alleged greenhouse sweet spot, sooner.