This in-between state challenges long-held ideas about where life truly begins and ends.

Scientists are beginning to explore what some describe as a “third state” that exists between life and death, where cells remain active even after the body has stopped functioning. Research has shown that certain genes and cellular processes continue for hours, or even days, after death. Some experts suggest this liminal phase could hold clues about consciousness and how life is defined at the cellular level. While highly debated, these findings challenge traditional views of where life ends—and hint at mysteries science is only beginning to uncover.