Sherpas show how the human body can thrive in extreme environments

Mount Everest is a grueling, deadly place for many adventurers. Beyond the steep terrain, bone-chilling temperatures, and fierce weather, the air is so thin that your body can begin to shut down. That is, unless you're a Sherpa. Members of the Nepalese ethnic group have evolved over generations to withstand the oxygen-deprived atmosphere high in the Himalayas, a new study found.  SEE ALSO: Now you can climb Mount Everest in VR Sherpas are, biologically speaking, extremely efficient at produ