The first great success story of life.
Bacteria
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BACTERIA EVOLUTION
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Science
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~1.3 Billion years ago (+/- 200 million)
Bacteria Diversify: Major modern phyla
The ecological cast takes shape.
Bacteria Evolution
By 1.3 billion years ago, as Earth’s chemistry shifted, life had already branched into the major paths that still shape the world today: bacteria, archaea, and eukaryotes, the branch that gave rise to plants, fungi, and animals. Life did not replace its earliest tricks. It kept them. Bacteria, archaea, cyanobacteria, viruses, and mobile genes still drive and reshape evolution from the shadows.
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07 Jul 2026
(Updated 2 weeks ago)
07 Jul 2026
(Updated 2 weeks ago)
Science
Story
Bacteria Aerobic metabolism expands
Great Oxidation Event
07 Jul 2026
(Updated 2 weeks ago)
Bacteria Evolution
The first great success story of life.
Tiny organisms, planet-sized impact.
Bacterial evolution tells the story of life’s earliest major triumph. These simple but astonishingly successful cells helped shape Earth’s atmosphere, drive the planet’s chemistry, and lay the foundation for nearly every ecosystem that followed. Understanding bacterial evolution reveals that the history of life is not just the story of large plants and animals, but of microscopic pioneers that transformed the world from the ground up.
