Antarctic ice cores hint that changes in the ocean might have played a larger part than have greenhouse gases in key climate shifts of the past three million years.

Marine embryos are usually studied in isolation. But when starfish embryos are in a crowd, they self-assemble into living solids with unexpected dynamics, revealing how simple organisms can help ...

Welcome to Smithsonian Open Access, where you can download, share, and reuse millions of the Smithsonian’s images—right now, without asking. With new platforms and tools, you have easier access to ...