In the Netflix movie Kate, an assassin is poisoned by the highly radioactive element Polonium-204, and swears revenge. But is ...

Marie Curie was a physicist, chemist and pioneer in the study of radiation. She discovered the elements polonium and radium ...

Sohrab Ahmari is a former editorial writer for The Wall Street Journal, based in London, where he also wrote the Border Lands column on security in Europe and the Middle East. He joined the Journal in ...

Braslavski, who worked as a security guard, was taken from the Nova Music Festival after he stayed behind to save others. Information ...