Benchmark 10G
Historical Perspectives: Splitting the Atom
Grades 6-8, page 252

In their laboratory in France, Marie Curie and her husband, Pierre Curie, isolated two new elements that caused most of the radioactivity of the uranium mineral. They named one radium because it gave off powerful, invisible rays, and the other polonium in honor of Madame Curie's country of birth. Marie Curie was the first scientist ever to win the Nobel prize in two different fields--in physics, shared with her husband, and later in chemistry.

See Content Standard G History and Nature of Science (grades 9-12): Historical Perspectives