> The LTEE is special because it allows the team to “replay” evolution and thereby probe the effects of prior history on later events. After every 75 days (500

> The LTEE is special because it allows the team to “replay” evolution and thereby probe the effects of prior history on later events. After every 75 days (500 generations), the bacteria are frozen. This serves as an organic data backup of sorts, allowing scientists to thaw and revive living “fossils.” This is just amazing. Kudos to this team of scientists.