A Nepalese Sherpa has climbed Mount Everest for the 20th time, beating his own world record. Apa Sherpa, 50, reached the summit of world's highest peak on Saturday morning. Apa Sherpa, who first scaled Everest in 1990 and has been dubbed the "super Sherpa" for the apparent ease with which he climbs the mountain, dedicated his latest expedition to the impact of climate change on the Himalayas.Duration: 00:45
