Have any humans been cryogenically frozen in time successfully?
96035
Define 'successful'. Plenty of people  have been cryogenically frozen Walt Disney syle.\n\nBut if success also involves bringing them back to life afterwards the answer is no, no one has ever been sucessfully frozen and revived.
1096857
I think it would be easier for ice to return to liquid form since they are more "condense" than the steam which can be any where in space.\n\nbtw lol @ vegasbill1963
386781
Human parthenogenesis has never been recorded for certain.  But, then again, chances are, if it has happened, nobody would notice.  Only recently has genetic testing been available to test it, I keep expecting an example to turn up eventually.
558181
I haven't.But.......\n\nTime travel has been a popular science-fiction theme since H. G. Wells wrote his celebrated novel The Time Machine in 1895. But can it really be done? Is it possible to build a machine that would transport a human being into the past or future? \nFor decades, time travel lay beyond the fringe of respectable science. In recent years, however, the topic has become something of a cottage industry among theoretical physicists. The motivation has been partly recreational-time travel is fun to think about. But this research has a serious side, too. Understanding the relation between cause and effect is a key part of attempts to construct a unified theory of physics. If unrestricted time travel were possible, even in principle, the nature of such a unified theory could be drastically affected....
642095
The common wood frog freezes solid every winter and then, come spring, defrosts and mates. \n\nFrogs that survive freezing excite our imagination with visions of immortality. Underlining this excitement is the unexpected: our experience tells us that freezing kills. We've all read news stories of people who have lost fingers or toes to extreme cold, or even their lives. Thus, a whole animal that can survive freezing comes as a shock. Yet during the past two decades we have also read or even experienced the successes of in vitro fertilization, which involves the routine storage of sperm and embryos in a frozen state at cryogenic temperatures (-40°F or lower). So why is the survival of a frozen frog at 26°F surprising? \n\nThoroughly confused? You should be. Freezing has a yin-yang effect on biological materials—it can both preserve and destroy tissue. This paradoxical nature has led to two different fields of science and medicine built around freezing: cryopreservation and cryosurgery.\n\nSurviving the deep freeze\nLife is a complex set of electrochemical reactions. The rate at which chemical reactions take place depends on temperature, and usually the lower the temperature the lower the rate. At absolute zero Kelvin (-460°F), the rate is zero. Therefore, lowering the temperature of biological materials such as cells, organs, or entire organisms to absolute zero causes life to stop indefinitely. If a person or his or her body parts could survive the excursion to absolute zero and back, scientists and physicians could theoretically use such freezing as a vehicle to transport that person or parts to any point in the future. \n\nBecause we humans are mostly water, however, any journey into the supercool is physically traumatic. At about 31°F, the water in our bodies begins to freeze. It starts at this temperature (rather than 32°F) because biological water is in the form of a solution, mainly of ions or charged atoms. The survival of any cells during freezing depends at minimum on the rate the temperature changes. For most organisms, even the slowest cooling results in an assault on their cells that is just too great.\n\nResulting cell damage is related to the dissolved substances or solutes in biological water, to the cell membrane properties, and to the fact that ice has a very tight crystallographic structure and cannot contain solutes. When biological materials freeze, the solution between cells usually freezes first. Solutes found in the original solution are ejected and concentrated in the unfrozen space between the ice crystals. Cells usually remain unfrozen though supercooled.\n\nIn order to balance out the resulting difference in potential energy between the inside and outside of the cell, water leaves the cell through the cell membrane. Inside the cell, this loss of water causes an increase in the ionic concentration and leads to chemical damage. Interestingly, ions, not ice crystals, trigger cell injury during freezing. Theoretically, an infinitely fast rate to absolute zero would eliminate this harm. This is not possible, of course, and at higher cooling rates the supercooling of water in cells causes ice to form within those cells, which also brings about damage.\n\nNatural antifreezes\nCells in freeze-tolerant wood frogs experience the same mechanism of freezing injury as any other creatures' cells. The frogs freeze very slowly to a temperature often several degrees below freezing. This should destroy the frog's cells, yet those cells and the frog as a whole survive. How? A primary mechanism is through the production of glucose and its incorporation in the frog's cell. By lowering the amount of water that leaves the cell during freezing, the glucose offers protection against the rise in ionic concentration and excessive cell shrinkage, thereby reducing chemical harm.\n\nWhile the wood frog spent millions of years perfecting the use of such chemicals, scientists in the field of cryobiology disco
2668
well probably... well they would still be alive while frozen, if they can get the temperatures low enough, it would slow everything down enough so that the person would not die because the processes in the body would have all slowed down tremendously.  this would not prevent aging and the biological processes, so the person would starve and stuff eventually, but it would slow everything down so dramatically that the person could last for years and years while their body only goes through the processes of like one day or so.  The temperature would also have to be dropped very very quickly this way the body wouldnt have a chance to realize it was being frozen.  The only problem would be then to unfreeze the person very very rapidly back to their normal temperature so the body is never in that in between state where it would start to shut off blood supply to the extremeties(legs and arms) in order to conserve heat for the organs(this is the normal response to temperatures that are too cold), because then the person may have to have something amputated. but if they can just unfreeze them super-fast without using too much heat(because if they used too much heat, it could burn them or denature the persons enzymes closer to the surface which would kill them.)  with technology on the express lane that it seems to be on now, im sure they can develop a method for this rapid freezing and rapid thawing.  i mean, think of computers and such, technology is going crazy.
481629
This is only possible if Ben has been travelling at near the speed of light for the last 15 years and has only aged 3 years while back on earth Joan has aged 15 years \n\nHe was 9 and she was 3.\nNow he is 12 and she is 18.\n\nAlternatively his birthday is Feb 29th and the 15 years includes only 3 leap years, he is therefore only  3 birthdays older, while she has had 15 birthdays\n\nOr Ben comes from Planet Zog which takes 5 earth years to rotate around the Zoggian Sun. He started at age 9 Zog Years and Joan started at age 3 Earth Years. Now he is 12 Zoggian Years old and she has got the key of the door having just turned 18.\n\nOr he was 9 in 1991, she was 3. After 3 years he was diagnosed as having an incurable disease and was put into cryogenic deep-freeze until such time as a cure was found, thus he is 12 and frozen and she is 18 and warm.
677492
you get frostbites in very cold areas, practically below zero deg celsius.  if the "cooled" lava rock is somewhere in arctic or antarctica (where volcanoes do exist), then it's possible
670061
Things that freeze at temps lower than about 75K.\nOxygen\nMethane\nhydogen\nhelium\netc
201844
Hopefully this will help some.  The first artificial refrigeration device was introduced at the University of Glascow in 1748, but it seems refrigerators and freezers didn't become common until the late-1800's to the early 1900's.  So although it's not probable that someone in the desert of Arizona was able to store and even make ice in 1910, it's definitely possible.
51744
Suprisingly, yes! And, even more suprisingly is, they've already done it! They have teleported the properties, the atom, across a several meter space. This is a step towards teleportation, but really, it's not a very big step because even though we might be able to teleport atoms, we can't arrange them, so it isn't feasible to teleport a human unless they don't mind becoming random atomic sludge on the ground.
215167
Cryonics is currently nothing but a money producing scheme when dealing with humans being put in it; otherwise, cryonics is a catch-all term for any form of statis induced by cooling. You have desperate people unwilling to accept death and cloying for some method by which they will feel to have escaped it. However, only the recently deceased are put into cryogenic stasis currently because it would be assisted suicide otherwise. The marketing campaign for cryogenic businesses should be "Only the dead can escape death."\n\nOn the other hand, this is an interesting field of research and could potentially be meaningful and realistic in years to come. Currently it is not.\n\nAn interesting avenue along a similar vein is the discovery of a "hibernation" gene - a gene sequence believed to control hibernating cycles in many other animals. NASA is seriously looking into hibernation as an approach to human space flight to Mars and other celestial bodies. This of course could also be used in a similar way to cryogenics.
492603
Very angry -- but not for long, I suspect.\n\nFOLLOWUP:  Interesting social experiment.  Surprising how many people have reacted angrily without even bothering to wonder what ice-nine is.  A smaller but still statistically significant number asked what it was, but it doesn't appear that any of them have bothered to actually find out.  Only two people seem to know about ice-nine, and yet still reacted angrily.\n\nShall I let the cat out of the bag?
745528
Interesting theory, however water expands when it freezes.  It has no problem melting under pressure.
1085627
Probably not until the problem of cellular damage by crystalline ice is solved. Ice crystals form inside cells and burst the cells, causing damage. While live cells like sperm can be frozen in glycerol (a thick liquid that prevents crystals from forming) it is another matter to freeze a whole body. Today, no one has frozen a whole animal and revived it from being frozen.\n\nNot only that, freezing causes massive systemic shutdowns of body systems (ie, you freeze to death) so any suspended animation method would require the ability to reanimate or to avoid death in the first place.\n\nMy guess is that suspended animation will not be by freezing but some other method.
1091115
The Day the Earth Froze with "Sampo"\n\nIt was bad enough to begin with, but they finally made it understandable for me.
366636
there are some efforts going on to bring mammoth to life by using its frozen sperm. with an african elephant. as far as cloning goes i dont have any idea.