Originally Posted by
jimmyb
I'm on my phone Tony maybe you can check on this.
Sagan says limestone holds much of the earths co2.
Farming today requires much limestone.Wonder if corporate farming could be at fault here.
The quantity of carbon contained in limestone is quite large. Some is released as CO2 when limestone is ground up. Cement making is the big culprit here. Farming not so much, since the crops that are fertilized suck in much more CO2 than is given off making the fertilizer.
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