A good article on cryonics from Engineering and Technology: "The field of cryonics, which made its debut in the 1960s, continues to push the envelope and search for a solution to death. The process consists of preserving legally dead humans or pets at very low temperature (below -130C) in the hope that future science can restore them to life, youth, and health. ...The advancement of medicine and science is so much faster than it used to be. Science fiction is becoming science fact on a daily basis. All of a sudden, cryonics doesn’t look quite so far-fetched. ... Most cryonicists believe reanimations will occur within 50 to 100 years for those currently being cryopreserved. ... Within that time frame, virtually all current diseases should be curable and elderly people can probably be rejuvenated to a youthful condition. ... With full disclosures and signed consent, [cryonics] is highly ethical. When you think about the grand scheme of things, cryonics is a lot more conservative than burial or conventional cremation. ... Tissue preserved at the temperature of liquid nitrogen does not deteriorate, even after centuries of storage. Therefore, if current medical technology can’t keep us alive, we can instead choose to be preserved in liquid nitrogen, with the expectation that future medical technology should be able to reverse any cryopreservation injury and restore good health. If sceptics don’t want to pursue this area, that’s fine, but I ask them not to interfere with my own efforts to save the lives of myself and the people I love."