New findings cast doubt on previous claims that structures found preserved in rocks in Greenland are stromatolites, but the original authors say the discrepancy lies in different samples.

Researchers find what appear to be 3.77 billion-year-old hints of microbial life hidden in Canadian rocks, but some scientists are not convinced.

New research uncovers previously unappreciated insights into the evolution of the well-studied energy-producing process.

In Chapter 9, “Life Gave Earth the Blues,” author Dorion Sagan addresses the planet’s exuberant color palette, evoking the contribution of industrious microbes.