A 3.45-billion-year-old diet

Researchers are providing new information about the 'diet' of microorganisms on the early Earth. By studying 3.45-billion-year-old rocks, the team uncovered clues about ancient microbial metabolism.

Stepping stones through time

Stromatolites are the most ancient fossils on Earth, and these structures built by microbes can still be found forming today in various places around the globe. Although they provide a straight line of life’s history ...

Bacterial growths may offer clues about Earth's distant past

One way that geologists try to decipher how cells functioned as far back as 3 billion years is by studying modern microbial mats, or gooey layers of nutrient-exchanging bacteria that grow mostly on moist surfaces and collect ...

First Fossil-Makers in Hot Water

Microbe mats in Yellowstone's hot springs may be living analogs of the primordial microbe communities that constructed the oldest rock fossils on Earth.

Bacterial 'ropes' tie down shifting Southwest

Researchers from Arizona State University have discovered that several species of microbes (cyanobacteria), at least one found prominently in the deserts of the Southwest, have evolved the trait of rope-building to lasso ...

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