Answer:
Marie won the 1911 Nobel Prize in Chemistry for her discovery of the elements polonium and radium, using techniques she invented for isolating radioactive isotopes. Under her direction, the world's first studies were conducted into the treatment of neoplasms by the use of radioactive isotopes.
Basically, she discovered new elements and one of them is radiation which is used world-wide for cancer and other things
Step-by-step explanation:
