I have noticed that many engineers have a problem accepting the Cataclysmic Anthropogenic Global Warming Hypothesis. I'm an engineer with a lot of experience in analyzing system failures to determine what went wrong, and why models failed to accurately predict what happened. Just a cursory examination of the methods used by the UN IPCC casts severe doubts on the validity of their conclusions. And, most of the literature on global warming simply assumes that warming will happen, and details the expected dire consequences, most of which are highly debatable even if warming does occur. (Such as a huge rise in sea level or spread of tropical diseases to higher latitudes, etc.) The famous engineer Burt Rutan, a well-known "green" has doubts that are the same as mine, as recounted in the blog wattsupwiththat.