Researchers recently revived ancient bacteria that had been trapped for thousands of years in water droplets embedded in salt crystals. Is this a good idea? This bacteria been found inside salt crystals ranging in age from thousands to hundreds of millions years old.
Researcher J. Koji Lum says, "You have a little trapped ecosystem. Some of these guys are feeding on other ones trapped in this space. The things that aren’t alive in there, their DNA is still preserved."