"For a surprising number of African Americans ...our family trees include many white ancestors," says Dr. Gates

"The moment that man took his penis out, my fantasies of an ideal study abroad experience in Florence disappeared"

Bonobo porn, MRI sex, female Viagra. "Bonk" author Mary Roach on the scientific quest to understand arousal -- and how little we still know.

Author Rose Hackman talks about emotional labor, and how it explains so many family and workplace gender inequities

The answer might surprise you

A video for students at Brigham Young University-Idaho warns "not to underestimate the danger" of masturbation

Male celebrities make it seem like men don’t have a biological clock. That’s not the case, experts say

The site's users are afraid that Yahoo will make their smut disappear. We take a look at what there is to lose

The international organization acknowledges that the true number is likely to be far higher

What is the connection between solitary study and private pervdom?

A researcher on male strip shows and women customers analyzes what's missing from Channing Tatum's latest gyration

A large amount of documented evidence of gender inequalities in the workplace, and in society more broadly, remains

In "The War Against Boys," author Christina Hoff Sommers claims that unfair programs to empower girls have taken a toll on boys.

For decades, "teledildonics" have been hyped as the new wave in erotic technology. So I decided to test one out

"Dudes sitting around stroking, watching a game, drinking brews, jerking, swapping college stories, showing off..."