feeling of ur euphoria. that's the danger of hypoxia. hypothermia, as you know, the core body temperature is around 37.5 c. the onset of hypothermia comes at 40 below. up at 35,000 feet, you'll be in the region between minus 45 and minus 50. skin freezes almost instantaneo instantaneously. >> it's just above the line of having -- his skin freezing, right, frostbite, so to speak. i want you to listen to this, this airport manager in maui. he says he saw the boy and is skeptic skeptical. >> i imagine 35,000 feet is very cold. also 35,000 feet in the wheel