Well I disagree with your disagreement. (So there!) Global warming is no where near the consensus view of the scientists themselves, IMO. There's a lot of agenda-driven popularization of the actual scientific debates which is coloring the public's perception of a united front. Though I agree that the global warming skeptics are in the minority. But that's an example of a minority view I'd want to be heard in HS class: Their objections to the global warming theories are much more sound, and more widespread, than creationism's (or even ID's) objections to evolution.
Because if we are talking about it being a majority, then we are back to where I just tried to place us.
I believe that anything that is a theory should be taught as a theory with the predominant counter theories explored. There seems to be a real resistance to doing that, however, and that has always seemed strange to me. Intellectual vigor would seem to me to demand presenting and exploring competing theories.