Mt. Everest: Life in the Death Zone

Each year, the allure of Mt. Everest attracts climbers from around the world. People hope to climb the world's highest peak in a challenge of human endurance and spirit - but it doesn't always have a happy ending. Some climbers achieve their dreams on Everest, but many die trying. This week, we will examine common issues that plague high-altitude climbers, tell stories of mountaineers whose bodies are permanently embedded on the mountain, and discuss why, as one climber put it, "Above 8,000 m...