THE STORY ON EVEREST [MAY 10, 1996: BY THE TIME I REACHED THE SUMMIT, I HADN'T SLEPT IN 57 HOURS. MORE THAN FIVE MILES UP IN THE TROPOSPHERE, MY OXYGEN-STRVED BRAIN WAS SHUTTING DOWN. MY WATCH READ 1:17 P.M., AND AFTER A FEW MOMENTS MORE, I BEGAN MY DE...