A landmark portrait of women, men, and power in a transformed world. Men have been the dominant sex since, well, the dawn of mankind. But Hanna Rosin was the first to notice that this long-held truth is, astonishingly, no longer true. At this unprecedented moment, by almost every measure, women are no longer gaining on men: They have pulled decisively ahead. And “the end of men”—the title of Rosin’s Atlantic cover story on the subject—has entered the lexicon as dramatically as Betty Friedan’s “feminine mystique,” Simone de Beauvoir’s “second sex,” Susan Faludi’s “backlash,” and Naomi Wolf’s “beauty myth” once did.  In this landmark book, Rosin reveals how this new state of affairs is radically shifting the power dynamics between men and women at every level of society, with profound implications for marriage, sex, children, work, and more. With wide-ranging curiosity and insight unhampered by assumptions or ideology, Rosin shows how the radically different ways men and women today earn, learn, spend, couple up—even kill—has turned the big picture upside down. And in The End of Men she helps us see how, regardless of gender, we can adapt to the new reality and channel it for a better future.