thing happening with the body does to react to the altitude, the lack of oxygen, and the low temperature? both. those are adaptive mechanisms that we ve all adjusted to to keep us alive in those extreme states. so as you say, seems to be a medical miracle that he survived this and walked off the plane. it s not the first time we ve heard of people surviving these extreme conditions, a couple of examples that i wanted to get your take on and how it actually worked. a woman, marcia page, survived a skiing accident. fell off a 65-foot cliff. she laid in the snow for 45 minutes at 6,000 feet. her body temperature dropped to 90 degrees. when is it dangerous? how low when your body temperature reaches at what point is it going to be a problem? that s what s amazing about this case. we don t know exactly how low his body temperature got. great point. in these cases we do. we don t have an answer to exactly how low each individual s body temperature can go before these states becom