The Arctic permafrost has been used to clone and revive 24,000-year old ‘zombies.
This idea can be used to bring back even dead humans, similar to what the tardigrades do.
Rotifers were frozen micro-organisms that lived in Arctic ice from 24000 years ago. Scientists have just brought them to life.
Source:
https://www.livescience.com/rotifer-frozen-24000-years-revived.html
