Scientists discover webbed feet in land animals, challenging common assumptions. This trait, initially for swimming, also ...

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 ...

New research shows that the earliest sponges were soft bodied and lacked skeletons, explaining why their oldest fossils are ...

Add Yahoo as a preferred source to see more of our stories on Google. Once upon a time, there were a bunch of one-celled microbes, swimming, eating, reproducing, doing all the things that a one-cell ...

An artist’s impression depicts Kryoryctes at Dinosaur Cove in Australia. New research supports the hypothesis that Kryoryctes is a common ancestor of both the platypus and echidna. - Peter Schouten ...

Scientists discovered some of the oldest bony fish fossils in China. The fossils explain the early history of animals with backbones.

This article was originally featured on High Country News. Increasing frequent and intense fires are shaping how species change, according to a paper published last year in the journal Trends in ...

A series of whole genome and gene duplication events that go back hundreds of millions of years have laid the foundations for tissue-specific gene expression, according to a new study. The 'copy-paste ...

To understand the origins of multicelled life, researchers are studying a motley assortment of simpler animal relatives. The commonalities they’re unearthing offer a trove of clues about our mutual ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. The story of two of ...