[Rebelbase]

"As for belching cows and volcanoes, are you for real? "

Yes. (cows are contributors, but disregard them for now) How do you explain prior warming/cooling cycles over the past 1 million years? They sure weren't caused by internal combustion engines or factory emissions.

[redboiling]

That argument has already been refuted in this thread. No one (sane) argues that there aren't ancient warming/cooling cycles, or that human activities are the *only* cause of warming. The argument is that more recent atmospheric conditions deviate from even that normally variable range. See graph above, for example.