Not only do we descend, along with all other life on Earth, from a single celled organism that lived 4 billion years ago, humans are, on average, 99.5% genetically similar to each other.

You may never have heard of this single-celled alga, but sailors and fishermen know its effect very well: the P. lunula algae are the organisms that occasionally make the sea glow blue. P. lunula ...

A single Euplotes walking under a microscope, using its "legs." The video is slowed down by a factor of 4 to make the movements more clearly visible. Video by Ben Larson/Wallace Lab “Euplotes uses ...

Large swaths of single-celled eukaryotes, non-bacterial single-cell organisms like microalgae, fungi or mold, can control microbiomes (a collection of tiny microbes, mostly bacteria) by secreting ...

Eukaryotic cells evolved from simpler cells, like bacteria and archaea. The Asgard archaeal phylum is currently thought to be eukaryotes' closest known ancestor. Now researchers have found an enzyme ...

It was the first record of a day-night internal rhythm in any single-celled organism. The discovery gave Johnson an idea: If cyanobacteria have daily rhythms, maybe he could identify the molecules ...