Is freezing your way into the future a good idea — and is post-cryonic survival even possible? — What? Based in Scottsdale, AZ, the Alcor Life Extension Foundation is a nonprofit that works to advocate, research and improve upon the science of cryonics, in which humans are stored in liquid nitrogen at a temperature of -196 degrees Celsius (-320.8 degrees Fahrenheit). Absolute zero, the temperature at which atoms stop…