Marie Sklodowska Curie born in Warsaw, Poland as Marie Salomea Sklodowska on November 7, 1867 was a Polish and French (after becoming a naturalized) physicist and chemist. She conducted pioneering researh on radioactivity. In 1903 she shared the Nobel Prize in Physics with her husband Pierre Curie and physicist Henri Becquerel and won the Nobel Prize in Chemistry in 1911. Among her achievements, she developed the theory of radioactivity, techniques for isolating radioactive isotopes, and the discovery of Polonium and Radium. She founded 2 Curie Institutes in both Paris and Warsaw and are still major centers for medical research today.