Writer Dava Sobel shines a spotlight on the remarkable Marie Curie in her new book, "The Elements of Marie Curie: How the Glow of Radium Lit a Path for Women in Science." Then, award-winning journalist Vince Beiser explores the global hunt for cobalt, lithium, nickel, copper, and other metals that power our electro-digital existence in his new book, "Power Metal: The Race for the Resources that Will Shape the Future."