To right the wrongs of his all-American sex education, 36-year-old Alex Liu goes on a quest to uncover naked truths and hard facts—no matter...

In a post-sexual revolution world, roughly one-third of all women have never experienced an orgasm. Armed with shocking sexual data, a bunch of...

We've been doing it since we first walked the Earth. It gives us pleasure and it gives us life. But how much do you know about how sex works? Now,...