[billybudd]

Carbon dioxide levels are now 27 percent higher than at any point in the last 650,000 years

"...CO2 levels have not been this high since 650,000 years ago, when the last human industrial expansion took place."

[writer33]

"...CO2 levels have not been this high since 650,000 years ago, when the last human industrial expansion took place."

And that's why we need to regress, back to a better America, where we grew crops and were one with the Earth. :)