In the wake of a drama teacher's decision to direct "Lysistrata" for the high school play, the women in the town begin to sexually reject their husbands and boyfriends in ways that force both men and women to reevaluate their views on relationships and sexuality.

"This is how a family keeps a secret...and how that secret ends up keeping them. This is how a family lives happily ever after...until happily ever after becomes complicated. This is how children change...and then change the world. When Rosie and Penn and their four boys welcome the newest member of their family, no one is surprised it's another baby boy. At least their large, loving, chaotic family knows what to expect. But Claude is not like his...

Since Darwin's day, we've been told that sexual monogamy comes naturally to our species. But this narrative is collapsing. Here, renegade thinkers Christopher Ryan and Cacilda Jethá, while debunking almost everything we "know" about sex, offer a bold alternative explanation. Ryan and Jethá's central contention is that human beings evolved in egalitarian groups that shared food, child care, and, often, sexual partners. Weaving together convergent,...