Nobel Prize in Chemistry to be recognized. Some important scientific discoveries are never considered for a Prize, as the discoverers may have died by the time the impact of their work is realized. For example, the contributions of Rosalind Franklin in discovering the structure of DNA: her x-ray crystallography citing the shape of DNA as a helix, were not realized until after her death, and the recipients of the prize were Watson, Crick, and Wilkins. A Chemistry Nobel Prize laureate earns a gold medal, a diploma bearing a citation, and a sum of money. The Nobel Prize medals, minted by Myntverket in Sweden and
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