Marie Sklodowska Curie Polish-French Chemist
             Marie Sklodowska Curie was born on November 7, 1867 in Warsaw, Poland. Her father was a physics teacher and her mother was a principal at a girls school in Warsaw. She had three sisters(Sofia, Helena, Bronislawa) and a brother Joseph.
             Marie, ever since her earliest years, was interested in reading and physics since her father was a physics teacher. After finishing high school, Marie went on to Paris because of the fact that she couldn't obtain any form of a higher education in Poland. There, while living in poverty and working hard, she graduated in physics from the Sorbonne in 1893.
             Marie met Pierre Curie in 1894 and married him a year after. Pierre was also a physicist who had already made some important discoveries. Since Marie was at this time looking for a topic for research for a higher degree, Pierre was in full sympathy. Due to this she chose to study radioactivity. Another reason why she chose this topic is because in 1896 Henri Becquerel discovered radioactivity in uranium ; Marie had reason to believe that there might be a new element in the uranium ore that Becquerel had worked with. After extensive studies, Marie S. Curie found that thorium is likewise radioactive.
             The following discovery that she made was, in a multitude of ways, the most fundamental. Marie tried to see if different compounds of uranium or thorium posses varying levels of radioactivity. When she was done experimenting, Marie concluded that it made no difference what she mixed the uranium with, whether it was wet or dry, in a powder form or a solution; the only factor that mattered was the amount of uranium present. Due to this, she noted that radioactivity had to be an atomic property.
             The next advance that Marie S. Curie made was in 1898; she found that two uranium ores, pitchblende and charcolite, emitted a greater level of radioactivity than uranium itself
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