Marie Curie was present in such minute quantities that they would eventually have to process tons of the ore. In July 1898, Curie and her husband published a joint paper announcing the existence of an element which they named "polonium", in honour of her native Poland, which would for another twenty years remain partitioned among three empires (Russian, Austrian, and Prussian). On 26 December 1898, the Curies announced the existence of a second element, which they named "radium", from the Latin word for "ray". In the course of their research, they also coined the word "radioactivity". To prove their discoveries beyond any
Discover: The World of Science Discover: The World of Science Discover: The World of Science is an American television show that ran between 1983 and 1990. Actor Peter Graves is the on-camera host and narrator of "Discover: The World of Science", a monthly, one-hour magazine-style television series which provides a human perspective on new developments in robots, science, technology, medicine, the environment, behavior and natural history. The series was typically broadcast on Wednesday evenings at 8 PM on PBS. The series, with early episodes being underwritten by Atari and later episodes being underwritten by GTE, was produced by Chedd-Angier Productions in association with Discover Magazine.