What is Cryopreservation?
A small group of companies are offering an alternative to the traditional options that follow death: preserving corpses by freezing your body for future scientists to revive. But is this even possible?could humans too survive freezing cold temperatures? The short answer is no, not if you just go ahead and freeze yourself like a squirrel or a frog. The water inside you will break your cells—literally.
"One of the big problems with low temperatures is that the water in our cells can freeze and thereby rupture the cells, so we are left with the option of adding an agent that will lower the freezing point (supercooling point) or in some other way prevent ice crystallisation within the cell," explains David Denlinger, an entomologist at Ohio State University in Columbus.
Despite the challenges, some people believe that freezing humans is a way to go once you die. What's the big idea? Simple. They say that, maybe, just maybe, sometime in the future, scientists will be able to revive you.
Cryonics uses temperatures below −130 °C, called cryopreservation, in an attempt to preserve enough brain information to permit the future revival of the cryopreserved person. Cryopreservation may be accomplished by freezing, freezing with cryoprotectant to reduce ice damage, or by vitrification to avoid ice damage.
What is cloning?Human cloning often refers to human reproductive cloning to produce a genetic copy of an existing person. Despite decades of speculation, there has been no human reproductive cloning. Research cloning, also known as embryo cloning or therapeutic cloning, is another form of human cloning that produces genetically specific embryonic stem cells. After a series of failures and high-profile false claims of success, the first report of stem cells created from cloned human embryos was published in 2013.
Some of the major concerns surrounding raised by research cloning are the risks it poses to the women who would be needed to provide the large numbers of eggs required; exaggerated and probably unrealistic claims of "personalized" therapies; and the need for effective oversight to prevent rogue efforts to use cloned embryos for reproductive human cloning.
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