Roughly 24,000 years ago, a collective of microscopic creatures was frozen helplessly into a deep layer of Siberian permafrost, and experienced slowed biological activity, called suspended animation. But now they're waking up.

Scientists are reviving the microbial critters called bdelloid rotifers after an unconscionably long hibernation, according to a new study published in the journal Current Biology.

And, they are reproducing.

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