On this edition of ST, our guest is the journalist and author Lisa Napoli, who joins to discuss her latest book, "Susan, Linda, Nina, & Cokie: The Extraordinary Story of the Founding Mothers of NPR." It's a group biography of Susan Stamberg, Linda Wertheimer, Nina Totenberg, and Cokie Roberts: four women who fought sexism, challenged journalistic norms, covered decades of American and worldwide news, and did much more throughout their pioneering careers to build and establish National Public