How far would you be willing to go to preserve the knowledge of all humankind? That is the task of one government agency. A group within our government wants to know what the world would be like if our best scientists didn't have to die because of old age or disease. What if Albert Einstein hadn't died? What wonders could he have uncovered? If Wernher von Braun hadn't died, we may already have colonies on Mars. These possibilities are what convince...