Even after the 1964 Civil Rights Act, the news business was a male-dominated backwater where a woman might be lucky to contribute to the "women's pages." But when a pioneering nonprofit called National Public Radio came along in the 1970s, four remarkable women stepped up and changed the industry. Lisa Napoli tells the stories of political insider Cokie Roberts; Susan Stamberg, the first woman to anchor a nightly news program; Linda Wertheimer, the daughter of New Mexico shopkeepers, who fought her way to a spot on-air; and Nina Totenberg, who invented a new way to cover the Supreme Court.