IUCr (International Union of Crystallography)

The International Union of Crystallography (IUCr) is a global organization that promotes the study of crystals—the repeating atomic structures found in minerals, metals, and biological molecules. It sets standards for how scientists describe and analyze crystal structures, supports research, and facilitates collaboration among crystallographers worldwide. By doing so, IUCr advances understanding in fields like chemistry, physics, biology, and materials science, ultimately helping us learn how materials are built at the atomic level and enabling developments in medicine, electronics, and other industries.