At the start of World War I, young working-class women swooned for men in uniform, leading middle-class women to form patrols to police public morals.

The author of the preamble to the Constitution spent years in Europe as a businessman, diplomat, and connoisseur of the pleasures of the flesh.

In the U.S. and Europe, there's still discomfort around the topic of masturbation. But we’ve come a long way from tying it to mortal sin and insanity.

How the once sex-averse Church of Jesus Christ of Latter-day Saints and Seventh Day Adventism embraced (married, monogamous) sex as a positive ideal.

We shouldn't see changes in Americans’ sex lives as a single phenomenon with an overarching cause.

Anthropologist Jennifer Musto looked at how the rise in concern about sex trafficking, particularly in regard to the domestic trafficking of underage girls, actually plays out in policing.

Frederick Hollick's case involved not only his controversial sex-positive arguments, but also the question of who should be privy to medical knowledge about sex.

As more people begin to identify themselves as asexual, their presence is revealing the limits to certain kinds of feminist politics.

Decades after Charles Knowlton died, his book would be credited with the reversal of population growth in England and the popularization of contraception in the United States. 

Some 19th-century utopian idealists took up deeply unconventional sexual arrangements based specifically on their religious beliefs.