Quote:
Originally Posted by Hawkeye
That CO2 is a greenhouse gas, yes there is absolute proof.
But there is no proof, and scant evidence, that any increase will cause a runaway greenhouse effect.
This is the logical leap I'm talking about.
The Earth is not a tiny closed chamber in a laboratory.
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Agreed, given your clarification, it is not trivial to prove that there would be a runaway greenhouse effect. It is only simple to prove that there is an effect.