Our planet is home to nearly 10 million animal species. Yet, what about the life forms that are invisible to us? How many ...

A new study focused on cryptic species—animals that look the same but are genetically different—found that they’re more widespread among vertebrates than we previously thought.

A new study published today (June 14) in Ecology Letters provides experimental evidence for a an assumption of evolutionary biology accepted since Darwin first proposed it in 1859's On the Origin of ...

Protists, eukaryotic unicellular organisms, play a crucial role in aquatic microbial food webs. Phagotrophic protists or ...

Tiny unicellular creatures called protists could keep greenhouse gases out of the atmosphere by gobbling up bacteria that emit CO2, researchers say. Now, a study finds that a few simple measures of a ...