Turning off Global Warming

Hello, is there any way to disable global warming in a multiplayer game?

this would be so awsome, global warming is stupid, mainly because its being caused by something that should have the opposite effect

I change the GlobalDefines XML file. I think its set at 2000 to begin with. Changing it to 0 removes it.

Its line 646 of the GlobalDefines XML file. Its Global Warming Probability. Thats on version 1.52 of Civ4 though.