Family life has been radically transformed over the past three decades. Half of all households are unmarried, while only a quarter of all married households have kids. A third of the nation's births are to unwed mothers, and a third of America's married men earn less than their wives. With half of all women cohabitating before they turn thirty and gay and lesbian couples settling down with increasing visibility, there couldn't be a better time for a book that tracks new conceptions of marriage and family as they are being formed. --from publisher description.