Half a century ago, Edmund Hillary and Tenzing Norgay became the first humans to stand atop the highest mountain of earth. Now, their sons and Brent Bishop, son of the first American to summit Everest, make a historic expedition to face Everest's unforgiving heights. Experience their harrowing, deeply individual quests to conquer this awesome peak - and discover the dramatic history of Everest, from tragedy and triumph to the unsung... see more