No. of Recommendations: 4
https://arstechnica.com/science/2017/10/evolution-experiment...

On February 24, 1988, Richard Lenski seeded 12 flasks with E. coli and set them up to shake overnight at 37ºC. But he seeded them with only enough nutrients to grow until early the next morning. Every single afternoon since then, he (or someone in his lab) has taken 100 microliters of each bacterial solution, put them into a new flask with fresh growth media, and put the new flask in the shaker overnight. Every 75 days—about 500 bacterial generations—some of the culture goes into the freezer.

The starvation conditions are a strong pressure for evolution. And the experiment includes its own time machine to track that evolution.
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