The Wikipedia site explains what Cryogenics is in scientific terms.
https://en.wikipedia.org/wiki/Cryogenics
The Cryonics Institute FAQs page explains the idea behind using it to bring people back to life.
https://www.cryonics.org/about-us/faqs/
The Daily Express story about the 14 year-old girl who was cryogenically frozen after dying of cancer. It also explains the process.
https://www.express.co.uk/news/science/733717/What-is-cryogenics-how-does-freezing-dead-body-work
This Wikipedia site on Cryonics pours a lot of cold water on the idea and defines it as a pseudoscience.
https://en.wikipedia.org/wiki/Cryonics
The MIT Technology Review calls it a false science.
https://www.technologyreview.com/s/541311/the-false-science-of-cryonics/
