Marie Curie is renowned for her pioneering work on radioactivity. She was instrumental in the discovery of the elements polonium and radium, making significant contributions to the field of nuclear physics and chemistry. Curie was the first woman to win a Nobel Prize and remains the only individual to win Nobel Prizes in two distinct scientific fields—Physics and Chemistry. Her groundbreaking research laid the groundwork for advancements in both medical applications and fundamental scientific understanding of atomic structure and radiation.