Not only was atomic scientist Marie Curie left-handed, but she was the matriarch of a whole family of accomplished, southpaw scientists. Curie, who discovered the principles of radioactivity and won two Nobel Prizes, was married to fellow lefty Pierre Curie, who was instrumental in helping Marie's atomic research and shared one of her Nobel awards. Historians believe their daughter, Irene, was also left-handed. Irene went on to win a Nobel Prize of her own with her husband who, you guessed it, was also left-handed.
Lefty scientists are hardly unusual. In addition to the Curie clan, Einstein, Newton and Alan Turing founder of modern computer science all were left-handed as well.