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.