Mount Everest is the highest mountain in the world at 29,028 feet and 9 inches. One of the first people to lead an expedition to the summit was Englishman George Mallory. He died not far from its peak in 1924, but his body wasn't discovered until 1999. Nearly 300 people have died trying to reach Everest's summit, but that hasn't deterred climbers from attempting their own expeditions to become king of the mountain.
Over the years, some amazing people have reached the summit and broken some incredible records. One person was blind. Another had no legs. A third broke a speed record. Still, more were elderly, battling major health conditions, or opting to climb without oxygen. One climber wasn't even old enough to legally drive a car. It's difficult to decide which climber over the past 60-plus years accomplished the most impressive climbing feat. Just arriving at the summit alone is impressive!