A woman in England who recently celebrated her birthday requested a cake decorated with a picture of her favorite singer, Mariah Carey. However the birthday girl was probably feeling emotions when she saw the result, which was topped not with the singer of "Hero" but with the face of one of science's heroes: Marie Curie, who conducted groundbreaking work on radioactivity. As a cake topper, the renowned scientist looked "very festive," said writer Harriet Alida Lye, who tweeted a photo of the cake on June 14. Carey's prowess as a musician is notable: She is a world-renowned recording artist who...