One of the most remarkable opportunities to study prehistoric life surfaced in Elk Lake, Minnesota, in 1983.
Frozen cells of 7,500-year-old bacteria were found embedded in the lake’s mud. They were taken to a genetics lab in Denver, Colorado, where they were carefully warmed to air temperature. Sure enough, the cells began to multiply!
How did they survive all those years?
Researchers claimed that such simple cells had the ability to lower their metabolism (the rate of consuming and releasing energy) until the environment was better suited for their survival.