Most infection prevention guidelines center on the hospital environment rather than the patient. But the source of antibiotic-resistant microbes is often from the patient’s own body.

Rock dust is only part of the story of soil. Living creatures, many of them too tiny to see, keep that soil healthy for growing everything from food to forests.

The Nobel Prize-winning Luria−Delbrück experiment showed that random mutations in bacteria can allow them to develop resistance by chance.

New research suggests the gut bacteria of red and grey squirrels differ significantly, potentially explaining the decline of the native red and the success of its grey counterpart.

The science of smell is an exciting area of research.

When ships sink, they add artificial structures to the seafloor that can quickly become diverse, ecologically important underwater communities.

An accordion-textured clay called smectite efficiently traps organic carbon and could help buffer global warming over millions of years.

By analyzing bacterial data, researchers have discovered thousands of rare new CRISPR systems that have a range of functions and could enable gene editing, diagnostics, and more.

To communicate, domestic cats send signals to each other using odors derived from families of bacteria living in their anal glands.