Main menu
Click categories to expand
A-Z listingplugin-autotooltip__plain plugin-autotooltip_bigA-Z listing
This is an alphabetical index of all content pages.
Other categories
Utilities
Also see
Importance Ratings
News
Legal
Donate/Sponsor
Curator's rationale
AI Policy
Twitter feed ð•
Feeds + s.e.o. etc.
rss / xml feed 
sitemap file
A-Z listing (archived)
In 2018 it was announced that a multicellular organism - a species of nematode worm - was successfully revived after having been frozen in the Arctic permafrost for around 30,000 years.
See: Viable Nematodes from Late Pleistocene Permafrost of the Kolyma River Lowland , Doklady Biological Sciences 480(1) pp.100-102
It's not known how the organisms can survive for so long without any apparent damage to any of their systems.
The majority of complex animals sustain permanent cellular damage when frozen, even for short periods - primarily due to the formation of ice crystals within cells and tissues.
Note: Some fish are adapted to long periods of very low temperatures (−3.5 °C) due to the presence of biological 'antifreeze' chemicals in their system. See Wikipedia
Ideas for new topics, and suggested additions / corrections for older ones, are always welcome.
If you have skills or interests in a particular field, and have suggestions for Wikenigma, get in touch !
Or, if you'd like to become a regular contributor . . . request a login password. Registered users can edit the entire content of the site, and also create new pages.
( The 'Notes for contributors' section in the main menu has further information and guidelines etc.)
You are currently viewing an auto-translated version of Wikenigma
Please be aware that no automatic translation engines are 100% accurate, and so the auto-translated content will very probably feature errors and omissions.
Nevertheless, Wikenigma hopes that the translated content will help to attract a wider global audience.
DOKUWIKI IMPLEMENTATION DESIGN BY UNIV.ORG.UK DECEMBER 2023