Where was radium first discovered?

Radium was discovered in 1898 in Paris by Marie and Pierre Curie, along with their collaborators. Like polonium, it was extracted from pitchblende, a mineral rich in uranium decay products. Radium became famous because of its strong radioactivity and early medical uses, though later its dangers became clear. The discovery played a major role in the history of nuclear science and earned the Curies a Nobel Prize in Chemistry in 1911.