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Curious to how long the frozen structure can "survive". I wonder if it's a good idea to freeze one such frog and thaw it centuries later (an amphibian time-trav
by pkoird 2y ago
Curious to how long the frozen structure can "survive". I wonder if it's a good idea to freeze one such frog and thaw it centuries later (an amphibian time-traveler!)
- olejorgenb 2y ago- Artificial experiment [1]: no longer than 3 months (but see disclaimer) - New study [2]: 7 months (with 100% survival rate) So further study seems to be needed. [1] https://journals.biologists.com/jeb/article/216/18/3461/11609/Hibernation-physiology-freezing-adaptation-and#:~:text=none%20tolerated%20a%203-month%20exposure%2C%20although%20the%20subjects%20used%20in%20these%20trials%2C%20which%20had%20recently%20been%20frozen%20at%20%E2%88%9212%20or%20%E2%88%9216%C2%B0c%2C%20may%20have%20been%20unduly%20stressed https://journals.biologists.com/jeb/article/216/18/3461/1160... [2] https://journals.biologists.com/jeb/article/217/12/2193/12112/Wood-frog-adaptations-to-overwintering-in-Alaska#:~:text=the%20duration%20of%20freezing%20survival%20in%20wood%20frogs%20in%20interior%20alaska%20was%20much%20longer%20than%20that%20reported%20from%20other%20studies%2C%20with%20temperatures%20within%20wood%20frog%20hibernacula%20remaining%20below%20the%20freezing%20point%20for%20up%20to%20218%20days%2C%20over%207%20months%2C%20with%20100%25%20survival https://journals.biologists.com/jeb/article/217/12/2193/1211...
- crazygringo 2y agoIf kept in pristine conditions (perfectly sealed to prevent evaporation leading to dehydration, deep freeze), is there a particular chemical needed for life that we might expect to break down first? Since chemical reactions happen in the freezer just slower...
- Qem 2y ago> Since chemical reactions happen in the freezer just slower. Can't the gross just be kept at artificially lie temperatures to lengthen the stasis time? Say, -100C or even lower?
- muzani 2y agoIt's a bit of a fantasy that we might find a perfectly well preserved dinosaur in a glacier somewhere.
- t-3 2y agoNot possible - the oldest ice we've found on the planet is much less than 10 million years old. Even if some area remained frozen long enough to contain an intact dinosaur, it would be buried deeply enough and under enough pressure to just be a bit more arctic oil by now.
- 8n4vidtmkvmk 2y agoWhat about amber? Don't tell me that's a lie too
- ComputerGuru 2y agoForget the dinosaurs, we can't even preserve the glaciers themselves these days!