The only person to win the Nobel Prize in two different scientific fields is Marie Curie. She was awarded the Nobel Prize in Physics in 1903 for her work on radioactivity, shared with her husband Pierre Curie and Henri Becquerel, and then won the Nobel Prize in Chemistry in 1911 for her discovery of the elements polonium and radium. Curie's groundbreaking contributions to science revolutionized the field and laid the foundation for future research in radioactivity and nuclear physics.