Marie Curie is known for her pioneering work in the field of radiation therapy. Her groundbreaking research on radioactivity, including the discovery of polonium and radium, revolutionized the field of medical science. Curie's work laid the foundation for the use of radioactive isotopes in the treatment of diseases, especially cancer. As the first woman to win a Nobel Prize and the only person to receive Nobel Prizes in two different scientific fields, her achievements not only advanced science but also broke barriers for women in academia and research.