Pierre and Marie Curie made a terrific scientific team. They coined the term "radioactivity" and discovered two new radioactive elements: radium and polonium. Through engaging yet accessible text, readers will follow them as they grow up in loving families dedicated to education, develop into budding scientists, get married, and launch their lab. Students will learn about the Curies' hardships and triumphs and explore how scientific discovery builds upon itself and other scientists into the future. Detailed diagrams and informative sidebars help simplify the details of important scientific concepts, such as piezoelectricity, radioactivity, and Becquerel rays.