Growing up at the foot of Mount Everest, a Sherpa boy named Tenzing Norgay dreamed about one day being the first to climb the giant in his backyard. For years he practiced, carrying loads of rocks in his backpack to grow stronger, prowling the mountain's lower levels; later, carrying loads of equipment for other adventurers, but always, always, wanting to climb himself.But his dream never seemed possible until he met Edmund Hillary, a New Zealand...