Category: Cryonics

Cryonics (from Greek κρύος ‘kryos-‘ meaning ‘cold’) is the low-temperature preservation of animals and humans who cannot be sustained by contemporary medicine, with the hope that resuscitation and restoration to full health may be possible in the far future. Cryopreservation of humans is not reversible with present technology; cryonicists hope that medical advances will someday allow legally-dead, cryonically-preserved “patients” to be revived. Since there is no proof that cryonic revival will work, cryonics is met by skepticism within the mainstream scientific community.

Cryonics procedures ideally begin within minutes of cardiac arrest, and use cryoprotectants to prevent ice formation during cryopreservation.


A tank of liquid nitrogen, used to supply a cryogenic freezer (for storing laboratory samples at a temperature of about −150 °C) 0

Understanding Cryonics: Part 2

Understanding Cryonics: Part 2 – Vitrification & Storage Article first published at In part 1 of ‘Understanding Cryonics’, we took a brief look at the science and technology behind freezing the recently dead with...

Technicians prepare a body for cryopreservation in 1985. 0

Scientists’ Open Letter on Cryonics

Signatories encompass all disciplines relevant to cryonics, including Biology, Cryobiology, Neuroscience, Physical Science, Nanotechnology and Computing, Ethics and Theology. The signatories, speaking for themselves, include leading scientists from institutes such as MIT, Harvard, NASA...