Rotifer recovering from week-long cryptobiosis in the lab. Credit: Lyubov Shmakova. For 24,000 years, tiny creatures lay dormant, entombed in the frozen depths of Siberia’s permafrost.

The rotifers were frozen in permafrost in a long-term cryptobiotic state. Lessons from these and other revived organisms could help farms on Mars. We promise this isn’t as sinister as it sounds: ...

Xenoturbella bocki is a small marine worm predominantly found on the seafloor of fjords along the west coast of Sweden. This simple organism’s unusual evolutionary history has long intrigued ...