Throughout human history, biology has treated life as binary. Something is either alive or dead. However, in late 2024, biologists published a massive review proposing a terrifying and fascinating third state of existence. Scientists have discovered that when certain organisms die, their cells don’t simply power down and decay. Under the right conditions, cells extracted from a deceased organism can spontaneously reorganize themselves into entirely new, functional, multicellular life forms.

What makes this an anomaly is that these new biological structures develop behaviors and capabilities they never possessed when the original organism was alive. For example, skin cells taken from dead frog embryos have been observed reassembling into microscopic xenobots that use tiny hairs to navigate their environment and push materials around. Similarly, human cells have reorganized into anthrobots that can move and even repair damaged tissue placed near them. In the third state, death seems to act as a trigger for cells to communicate, rewrite their own rules, and build a completely new life form. Scientists still do not fully understand the bioelectric signals that instruct dead cells to do this. Meaning, we might have to completely rewrite our definition of what death actually is.