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On 25 June 1903 Marie Curie defended her doctoral thesis on radioactive substances at Université de la Sorbonne in Paris, thus becoming the first woman in France to receive a doctoral degree. Image shows the thesis cover: Recherches sur les substances radioactives (Research on Radioactive Substances).
Photo: Public domain, via Wikimedia Commons
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Pierre and Marie Curie in the "hangar" at l'Ecole de physique et chimie industrielles in Paris, France, where they made their discovery. (Photo taken 1898.)