It is almost 60 years since humankind accomplished what many thought impossible. New Zealander Edmund Hillary and Nepalese sherpa Tenzing Norgay became the first people to reach the summit of the world's highest peak, Mount Everest on May 29, 1953. Since then many have followed in their footsteps. But the increasing number of climbers are leading to tension on the mountain, and even fatalities. Al Jazeera's Steve Chao reports from Mt. Everest..