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Return of the coli

As explained in this article, the LTEE is back at Michigan State University after 7,000 generations in Texas. We revived the E. coli and restarted the count-up clock at 82,000 generations on September 10.

‘Evolution under a microscope’ going strong at MSU by Bethany Mauger

Richard Lenski writes in the LTEE notebook on September 10, 2025, the day it continued at Michigan State University. Jeffrey Barrick and Devin Lake look on after having done a share of the transfers. Photo: Finn Gomez

P.S. The sign is viewed backwards in the photo, it is 82,007 from the other side!

Time flies, and Devin Lake just froze down the 82,500-generation samples last week.

Evolve, E. coli, evolve!