Just as the human body serves as a habitat for bacteria and other microbes, diverse, tiny organisms known as protists host their own microbiomes. "We know there are many symbionts in the world, but it ...

The so-called “circle of life” dictates that if a living thing exists, it’s probably food for something else. Viruses, however, have historically managed to escape this unofficial rule. Although ...

Over a single day, in the placid waters of a single pond, a million virus particles might enter a single-celled organism known for the minuscule hairs, or cilia, that propel it through those waters.

Using the word predation may seem surprising when we talk about the first organisms that set out to eat other organisms, for they were not deadly predators with sharp teeth and claws, but small single ...

E. coli is arguably the most well-studied organism on Earth, but scientists have now discovered a new behavior that’s almost never seen in bacteria. The normally single-celled organisms have shown ...

A person in Florida has died after they were infected with a deadly single-celled organism. The brain-eating amoeba destroys brain tissue and causes death in 97% of cases. It's caught through the nose ...

Researchers have found that microscopic ciliates can eat huge numbers of infectious chloroviruses that share their aquatic habitat. The team's lab experiments have also shown that a virus-only diet, ...