Her notebooks are still radioactive

Marie Curie is the only person to have won the Nobel Prize in two different sciences: Physics in 1903 and Chemistry in 1911.

She worked so many years with radioactive material that her laboratory notebooks are still, a century later, radioactive. They are kept in lead-lined boxes, and anyone who wants to consult them signs a waiver.

The science that killed her is the same one that treats cancer today.