Actually, what is really alarmist is the coverage this is getting. When I heard Rush start on this yesterday, he didn't sound that irrational, and mentioned the fact that this report did not recommend any of the Kyoto lunacy, etc. I didn't listen to all of his comments about it because I was driving and sometimes I find his voice a little grating and distracting, and in any case, he didn't seem to be saying anything especially revealing.
But in general, I think there's a lot of hysteria going on about something that is, as you point out, not really cause for it.
You probably did not hear him call our president "George W Algore." That was the moment that I turned him off with a vow of not listening again. (I've been having a hard time kicking the habit of almost 14 years) I wished that there was some sort of gauge or dial right on his desk that could show the number of listeners who switched him off at that moment yesterday.
I need to do some reading on this issue and see who the people are who are proposing the theory. If I remember correctly (and it has been a number of years since I was in school...ha!) the process of an ice age onset actually begins with increased temperatures in certain areas of the ocean. I know this sounds strange, but the increased tempreatures in some currents indicate changes which are precursors to lowered air temperatures.
As I said, I need to do some research on this. The assumption that global warming is untrue simply because we don't want it to be true is not scientific, nor rational, nor conservative.