Recently, a search team for three university students who went missing in the Northern Alps discovered a video camera inside a mountain hut where they were believed to have taken refuge. Below is a summary of the recordings left on the tape: "This is all we have..." All that was left in the hut was a single hand warmer and a pittance of food. As the leader muttered in despair, he took his girlfriend's hand and led her to a corner of the hut where her juniors could not see them. In an extreme situation...