When I was getting my degree at UC Davis, my environmental chemistry teacher had a day discussion on the ozone layer. The environmentalists were claiming that at the current rate of ozone depletion, by 2005 the Earth would be uninhabitable by everything but some simple bacteria. Like the ozone hole political scare tactics of 10 years ago, global warming is this decades new boogey-monster. Normal variances in global temperatures is normal, and the amount of "greenhouse" gasses put out as a result of mankind pales in comparison to normal volcani activity. The current "warming trend" is actually already on the down-swing. But I enjoy watching the "Chicken-Little" effect in the news. I'll see you all in ten years, and there won't be any icebergs in down town Manhattan. ;)