Lately I have been really frustrated by the blind insistence of people who deny the existence of global warming. I just spent an entire semester studying the environmental physics of global warming. It exists! (See David Archer's Global Warming: Understanding the Forecast.) Global warming is based in science and agreed upon in the scientific community. All of the natural environmental factors which could have caused global warming do not equal the amount of warming which has occurred. Anthropogenic forcings have to be considered. Even if global warming turned out to be a natural occurrence, wouldn't it be better to reduce the impact we have on the environment anyway? In burning fossil fuels and wasting resources, we do a lot more harm than cause the temperature to rise. Global warming is not an ideology. I'm not trying to tell anyone my belief is better than anyone else's. I just get so frustrated when people choose to ignore facts. Of course, you have a right to deny global warming or anything else, but don't attack it when there are sound scientific principles supporting it.