Where was the element polonium first discovered?

Polonium was discovered in 1898 by Marie and Pierre Curie in Paris. They isolated the new radioactive element from pitchblende, a uranium-rich ore, during their research on radioactivity. Marie Curie named it polonium after her native Poland, which was then not an independent country. The discovery was part of the groundbreaking work that eventually led to the understanding of radioactivity and earned the Curies major scientific recognition.