Marie Curie theory of "radioactivity" (a term that she coined), techniques for isolating radioactive isotopes, and the discovery of two elements, polonium and radium. Under her direction, the world's first studies into the treatment of neoplasms were conducted using radioactive isotopes. She founded the Curie Institutes in Paris and in Warsaw, which remain major centres of medical research today. During World War I, she developed mobile radiography units to provide X-ray services to field hospitals. While a French citizen, Marie Skłodowska Curie, who used both surnames, never lost her sense of Polish identity. She taught her daughters the Polish language and took
Ève Curie was not successful ...". Ève Curie died in her sleep on 22 October 2007 in her residence on Sutton Place in Manhattan, aged 102. Ann Veneman, the Executive Director of UNICEF, said after her death: Ève Curie Ève Denise Curie Labouisse (; December 6, 1904 – October 22, 2007) was a French and American writer, journalist and pianist. Ève Curie was the younger daughter of Marie Skłodowska-Curie and Pierre Curie. Her sister was Irène Joliot-Curie and her brother-in-law Frédéric Joliot-Curie. Ève was the only member of her family who did not choose a career as a scientist and did not