The material, now part of an African mountain range, bolsters the idea that hydrothermal veins supported early forms of life.

After controlling for high levels of bacterial contamination in their lab and reagents, researchers detect microbial genetic material in plasma samples from healthy people and cancer patients.

Brood X’s emergence tunnels—numbering in the hundreds per square meter of soil—give researchers a special opportunity to study how such extreme soil aeration affects the ecosystem.

Researchers identify live bacteria in fetal guts, skin, lungs, and placentas that activate memory T cells, indicating that early exposure to microbes could help educate the developing immune system.

Researchers find traces of SARS-CoV-2 in the stool and blood of kids with the post–COVID-19 inflammatory disorder, and signs of increased intestinal permeability.

Researchers report chemical and molecular signatures of microbial activity from millions of years ago in mineral samples from abandoned mines in Sweden and nearby countries.

Projects aimed at collecting big data about the ocean’s tiniest life forms continue to expand our view of the seas.

With multiple microbiota therapeutics in the pipeline for recurrent Clostridium difficile infection, clinicians foresee a shift in treatment options for the condition.

The researchers found thousands of species not previously documented.

A controversial idea from the mid-20th century is attracting renewed attention from researchers developing theories for how cognition arises with or without a brain.

Historical and modern experiments have hinted that unicelluar organisms can learn from their experiences, but the idea still has its critics.

In a new study, human and mouse cells recognized only one in five bacterial species collected from more than a mile below the Pacific Ocean’s surface.

With modern technologies unearthing novel bacterial and archaeal species by the dozens, hundreds, or even thousands, manually naming them all is no longer practical, scientists say.

The mysterious DNA sequences appear to help bacterial cells spot when they’ve been infected with viruses—and prompt those cells to self-destruct.

Early investigations of the microbial communities in and around sunken boats reveal that there are patterns to where bacteria settle.