More than 5,000 have scaled it since it was first climbed by New Zealander Edmund Hillary and Sherpa Tenzing Norgay in 1953, while hundreds more try every year. But Everest is as deadly as it is beautiful, and many have never returned from their ill-fated expeditions. Recently, Everest claimed nine lives in 11 days, including Brit climber Robin Haynes Fisher. Fisher was just 150m from the summit...