Certain species of wasps and frogs share a pain and inflammation peptide similar to one found in vertebrates to help defend against predators—a discovery that contributes to a shifting view of how ...

"In these frogs, we've discovered extraordinary variation even among closely related species, which allows us to explore how important things like sex determination evolve rapidly," says Ben Evans, a ...

See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. Paleontologists working in Patagonia have unearthed the oldest-known ...

Extremes of the colour gradient of the Eastern San Antonio frog (Hyla orientalis). On the left, a specimen captured in Chernobyl inside the high contamination zone; on the right, a specimen captured ...