“The Wild World of Cryonics: Is Immortality Possible?” More than 650 people around the world have chosen to be preserved in liquid nitrogen, hoping future technology may one day revive them. This process, known as cryonics, involves storing the body at extremely low temperatures to prevent decay. Although there is no proven way to bring someone back to life today, believers hope that future medical advances — genetic repair, nanotechnology, or artificial organs — could make revival possible. Cry