I read this article some time ago, but thought it was worth sharing. The author does a great job of illustrating not only the mechanics of hypothermia, but the mindset that gets people in trouble in the first place.

http://outside.away.com/outside/magazine/0197/9701fefreez.html

"When your Jeep spins lazily off the mountain road and slams backward into a snowbank, you don't worry immediately about the cold. Your first thought is that you've just dented your bumper. Your second is that you've failed to bring a shovel. Your third is that you'll be late for dinner. Friends are expecting you at their cabin around eight for a moonlight ski, a late dinner, a sauna. Nothing can keep you from that."

I read this one earlier and was thinking about putting the link up myself.
It is a very good article.
He was extremely lucky to have been found and saved.

hypothermia is a killer even in florida. Here prevention and treatment is taught to 6th graders in class.
But then again, we have firearms training for kids on school time also.

http://dwb.adn.com/news/education/story/8446166p-8340353c.html

http://www.juneauempire.com/stories/102005/loc_20051020017.shtml

http://www.juneauempire.com/stories/110701/Loc_kidsguns.shtml

That's a good read on a serious condition.

Here's a somewhat lighter take on the subject.