If you've ever wanted to climb Mount Everest, you might assume the greatest danger lies near the summit. That's where the air is thin, the temperatures brutal, and the margin for error is razor thin.
But the data tell a different story. Roughly 80% of Everest climber fatalities occur after reaching the summit. When researchers examine where and why people die on the mountain, four categories consistently rise to the top: Base camp, the ascent, the descent and sherpas.
