Cryogenic freezing, or cryonics, involves preserving human bodies at ultra-low temperatures after legal death, in hopes that future science might revive them. Pioneered in the 1960s by Robert Ettinger and inspired by science fiction, cryonics gained momentum when James Bedford became the first cryopreserved human in 1967. His body remains frozen in a facility in Arizona, awaiting future medical advances.

The process starts after legal death. The body is cooled, infused with cryoprotectants to prevent ice formation, and then stored in liquid nitrogen at -196°C. Whole-body preservation costs around $150,000, while neurosuspension (preserving only the brain) is a cheaper alternative.

Over 5,500 people have signed up, and around 500 are already preserved. Billionaires are even establishing “revival trusts” to retain their wealth post-revival. While the possibility of revival remains speculative—no one has yet been brought back—supporters believe that advancements in nanotechnology and regenerative medicine may one day make it possible.

Cryonics offers a slim hope to those unwilling to accept death as final. Despite no guarantees, the ultra-wealthy are betting on the chance of a second life, even if it’s centuries away. For them, it’s not just about surviving—it’s about preserving both life and legacy.