CD, I think the problem is that today, all those greenhouse gases are working at a much more rapid rate than ever before to destroy the protective ozone layer around the Earth's atmosphere which serves to shield us from the harmful effects of solar rays. I would also point out the fact that the ice caps are definitely melting at a good clip, just look at those polar bears clinging to a small ice floe surrounded by open water in what were 5-10 years ago vast ice glaciers. I would agree with you that there are fanatics and extremists on "the left" of this issue, but--in fairness--I don't see how we can afford as a species to ignore the fact that our environmental footprint thas been at times much, much too heavy, with adverse consequences for Mother Earth and thus all humans down the road. I'm not advocating going back to the horse and buggy and steam power, but I do believe that the quest for profits should never trump moderation and/or what benefits the most people in the long haul.
