4 ms·
Just so that this isn’t unclear to anyone, a quick search for historical CO2 shows how absurdly wrong this comment is.
by cung 5y ago
Just so that this isn’t unclear to anyone, a quick search for historical CO2 shows how absurdly wrong this comment is.
- URfejk 5y agoCarbon dioxide concentrations dropped from 4,000 parts per million during the Cambrian period about 500 million years ago to as low as 180 parts per million during the Quaternary glaciation of the last two million years: https://en.m.wikipedia.org/wiki/Carbon_dioxide_in_Earth%27s_atmosphere https://en.m.wikipedia.org/wiki/Carbon_dioxide_in_Earth%27s_...
- cung 5y agoI would argue 500 million years ago is not ”not so long ago”. The Cambrian period also didn’t have more than a microbial soil crust living outside of oceans.
- hntroll1110 5y agoHow old do you think the earth is?
- hntroll1110 5y agoCould you say specifically what you think I got wrong? It would be cool if one or more of us learned something from our exchange.