Marie Curie is renowned for her pioneering research on radioactivity. Her groundbreaking discoveries, including the isolation of radium and polonium, laid the foundations for modern nuclear physics and medicine. She was the first woman to win a Nobel Prize and remains the only person to win in two different scientific fields: Physics and Chemistry. Curie's work advanced our understanding of radioactive elements and their applications, enhancing medical treatments like radiotherapy for cancer. Her legacy continues to inspire scientists, especially women in STEM, and highlights the importance of perseverance in research despite societal challenges.