How much do you know about women’s reproductive system? This article provides descriptions and drawings of the female reproductive system.

Men’s reproductive system may be more complicated than you think. This article explains and illustrates the male reproductive system.

Is masturbation normal? Is it harmful? This article provides answers to these and other questions about masturbation.

It’s no secret that men and women react differently to sexual stimulation and sex. But do you know why? This article explains the male and female human sexual response.

This video explores human pheromones, sex scents that may sway sexual attraction.

Heterosexuality, homosexuality, and bisexuality are three main types of sexual orientation. This article is an overview of sexual orientation.

Get the results of a marriage age poll that asked about the best age for men and women to say “I do.”

What would make you happier: more money or more sex? Read what research says. Hint: Think bedroom, not bank.

This article isn’t about X-rated chats. Instead, it’s about the way adults talk about sex.

Who’s happier with their sex life: men or women? This article has the latest answers.

This article explores research on marriage and health. The bottom line: Health may be another reason to improve a bad marriage.