No one has explained to me what caused the end of last ice age! It requires lot of warming to melt many miles thick glaciers parked in the mid-west. So much ice melted it caused formation of the Great Lakes, largest body of fresh water on earth.
May be the cave man burned too many twigs?
No, it took a lot of food to keep the Flintmobile going; being made of hardwood and stone, it was quite heavy; and there was a darned good reason other than the technological challenge that the Flintstones’ house didn’t have any glass in the windows, if you know what I mean.
That “greenhouse gas” had to go somewhere.
Ping to #31.
It is already happening!