(The Conversation is an independent and nonprofit source of news, analysis and commentary from academic experts.) Kevin Omland, University of Maryland, Baltimore County (THE CONVERSATION) We humans ...

A microorganism whose evolutionary roots can be traced to the era of the first multicellular animals may provide a glimpse of how single-celled organisms made a critical evolutionary leap. In ...

Slime molds, which live in soil, are truly ancient animals. They arrived on land close to a billion years ago and may well have colonized continents that were then home only to films of bacteria.

In an incredible discovery, scientists have uncovered what they believe is the oldest animal ever found on Earth. Known as Otavia antiqua, this primitive organism dating back 760 million years, was ...