The famous female scientist known for her research on radioactivity is Marie Curie. Born in Poland in 1867, Curie was a pioneer in the field of radioactivity and made groundbreaking discoveries, including the elements polonium and radium. She was the first woman to earn a Nobel Prize and remains the only person to win Nobel Prizes in two different scientific fields—Physics in 1903 and Chemistry in 1911. Curie's research had profound implications for physics, chemistry, and medicine, particularly in cancer treatment through radiation therapy. Her legacy continues to inspire future generations of scientists, especially women in STEM.