Why is climbing Mount Everest so dangerous?

The recent death of Australian man Jason Kennison after reaching the summit of Mount Everest highlights how dangerous mountain climbing can be.

Climbing Everest: How the body breaks down at high altitude

Mount Everest Deaths: Why Climbers Pursue The Seven Summits Club : NPR

Eight people have died on Mount Everest this week - how is it so

Explained: Why this season has been so dangerous for Everest climbers

List of people who died climbing Mount Everest - Wikipedia

How Dangerous Is Mount Everest's Death Zone?

Ego-tourism and Mt. Everest: The hidden costs of the highest climb

Climbing Mount Everest May Not Be as Deadly as It Once Was

How Many People Die on the Mount Everest each Year?

How dangerous is Mount Everest?

How deadly is Mount Everest? - BBC News