Author Keith O’Brien is a former reporter for the Boston Globe and a frequent contributor to National Public Radio. He has written for the New York Times Magazine, Politico, and Slate, and is the author of "Outside Shot: Big Dreams, Hard Times, and One Country’s Quest for Basketball Greatness." Join us as O'Brien discusses his latest book, "Fly Girls."

"Fly Girls" is the true story of women willing to risk everything, even their lives, to do the thing they loved. It’s the hidden history of women striving to change the world, despite defeat after defeat. These female fliers – sometimes called “fly girls” – shattered the original glass ceiling, battled injustices which feel all too timely today, fought the men trying to stop them, and ultimately prevailed. These air races, many believed, were no place for a woman. But a small cadre of female fliers – the “Fly Girls” of the book’s title– set out to prove their mettle in the air, flying across oceans and continents.