Bringing people back from the "dead" is not science fiction anymore. Typically, after just minutes without a heartbeat, brain cells start dying, and an irreversible and lethal process is set in motion. But when a person becomes severely cold before his heart quits, his metabolism slows. The body sips so little oxygen that it can remain in a suspended state for up to seven hours without permanent cell damage. Thanks to improvements in technology (like the cardiac bypass machine that saved Dwyer's life) and medical understanding, the odds are getting better for coming back from the edge. They are so good, in fact, that some doctors and scientists are testing a bold new hypothesis: What if you could induce a near-death state in order to save lives? If it can be done, it could be a game changer for saving some of the nearly 200,000 Americans who die each year due to trauma injuries. By essentially pressing "pause," doctors might be able to buy precious time that could mean the difference between life and death. Suspended animation is no longer the stuff of Star Wars or Avatar.