[TalBlack]

"55 million years ago there was a sudden supercharged spike of carbon dioxide that accelerated the greenhouse effect."

And how long would it take all of mankind to "cause" even a small fraction of this supercharged (natural) event?

[beancounter13]

You know, I am surprised no one seems concerned about the materiality of the numbers. When did this "sudden supercharged spike" occur? Maybe from 55.00M years ago to 54.99M years ago?

Hmmm. That's still 10,000 years --much longer than currently recorded history, and even longer than the 100 years I can hope to live! I think science still has a long way to go before it can truly "prove" anything worthwhile on this front!