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 ...

The platypus is one of the strangest animals on Earth, combining traits of mammals, birds, and reptiles. This video explores its insane biology and why scientists are still baffled by it.

Earth is full of bizarre creatures, with more being discovered each year. As documented in the scientific journal Species Diversity in 2024, researchers recently discovered a highly unusual marine ...

With an estimated 8.75 million living species on earth, there are always going to be some weird and unusual animals you've never heard of. From the friendly-faced axolotl who's one of the most unusual ...

(CNN) — The story of two of the strangest animals on the planet just got a little stranger, thanks to clues revealed by a lone fossil specimen that scientists now say represents a long-extinct ...