Cryonics: Freezing Bodies for the Chance at Living Again in the Future 

Imagine a future where medical technology has advanced to the point where we can revive those who are currently considered legally dead. This concept is at the very heart of cryonics, which in practice involves preserving the bodies (or sometimes just the brains) of the deceased at extremely low temperatures, often in liquid nitrogen, with the hope of bringing them back to life in the future.