Beneath the surface of our everyday world lies a creature so small and unassuming, yet it holds a secret that defies expectations. While we often imagine large predators or grazing animals when ...

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

You can try to prevent it, but it’s inevitable: everyone’s teeth stain and yellow over time. Dark-colored foods and drinks are unavoidable in our diets, and genetics, thin enamel or poor oral hygiene ...