I just find it amusing that people think we puny humans can have any major effect on the environment The world is huge people. H-U-G-E and it has gone through far more dramatic changes in the past without the "aid" of humans. Who is to say that it can't happen again? I don't know if global warming is actually happening, maybe it is, maybe it isn't. What I do know is that we probably didn't cause it (as history has shown the earth does this sort of thing on a REGULAR BASIS) and therefore we can't stop it I agree with ainwood's tilt of the earth's axis concept. What makes us humans so arrogant as to challenge the cosmos?