7K views · 516 reactions | In July 1898, Marie Sklodowska Curie and Pierre Curie published work where they mentioned the term radioactivity for the first time. During that same year, the two Nobel Prize laureates discovered two new elements: polonium (in June 1898) and radium (in December 1898). Watch the story behind the discovery of polonium, as well as radium. #NobelPrize | Nobel Prize | Facebook