Marie Curie is renowned for her groundbreaking research on natural radioactivity.
She coined the term "radioactivity" and discovered the radioactive elements polonium and radium.
Marie Curie, along with her husband Pierre Curie, discovered the phenomenon of radioactivity, which was pivotal in understanding how certain elements, like radium, could emit energy.
Her work on radioactivity revealed the potential for radiation to be used in medicine, especially in the treatment of cancer.