Twelve of September

On 12 September 1897 Irene Joliot-Curie was born in Paris as the daughter of Pierre and Marie Curie, who went on to become Nobel Laureates in Physics and Chemistry. She worked together with her mother to provide mobile X-ray units during World War I, resumed her studies at the university in Paris after the war, and later worked at the institute that her parents had founded. Irene Joliot-Curie awarded the Nobel Prize for chemistry in 1935 for the discovery of artificial radioactivity. This made the Curies the family with most Nobel laurates to date. Both children of the Irene Joliot-Curie, Helene and Pierre, are also stemmed scientists.