There are no external signs of life. When many cold-blooded animals hibernate, something interesting happens at the cellular level. The fluid around the cells, but not in the cells, is frozen solid.

Preservation of animal genetic material poses its own unique set of challenges — ones that the San Diego “Frozen Zoo” don’t shy away from. They’ve recently shown the viability of the ...

After years of studying the genetics and morphology of the long-frozen nematodes, Shatilovich and her colleagues now claim that the reanimated worms are a previously-undescribed species—one from ...