21st March 2007, 6:46 AM
I think it's pretty obvious that global warming exists, especially considering that several thousand years ago the world was almost entirely encased in ice. Which, to me, suggests that there could be something aside from "it's all the fault of humans, they're the one's to blame" and perhaps more like heating and cooling phases of either the Earth's core or the sun.
Sometimes you get the scorpion.