In most cases, evolution is a pretty slow process, taking hundreds if not thousands of years—but when humans enter the ...

Once upon a time, there were a bunch of one-celled microbes, swimming, eating, reproducing, doing all the things that a one-cell bit of life can do. Then, some time later, there were their descendants ...

A visualization of Tiktaalik roseae, an extinct aquatic animal with fossils that shed light on the evolution of land animals from marine animals millions of years ago. Nobu Tamura via Wikimedia ...

Animals across the natural world rely on a limited number of combat strategies when facing rivals or threats. Researchers have identified four primary combat styles that appear repeatedly across ...

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 ...

The evolution of some of the earliest complex animals on our planet may have been spurred on by other, simpler early animals. These simple marine animals first evolved around 560 million years ago and ...

Ronan the sea lion can dance to a lot of different songs, but there is something about “Boogie Wonderland,” by Earth, Wind and Fire that really gets her going. It didn’t take more than a few days for ...

In five cases where vertebrates evolved monogamy, the same changes in gene expression occurred each time. In many non-monogamous species, females provide all or most of the offspring care. In ...

The peppered moth is an iconic example of Charles Darwin’s theory of evolution by natural selection. For centuries peppered moths (Biston betularia) were common in the forests around Manchester, ...

When people build cities and introduce invasive creatures, resident critter populations sometimes adapt Brian Handwerk - Science Correspondent When humans build cities and introduce invasive species, ...

Some animals are capable of cooperating with members of other species. An interdisciplinary team explores the cognitive underpinnings of such cross-species collaborations, opening up a new perspective ...