Sexuality deals with humans' perceptions and behaviors as sexual beings. Learn about both the biological and emotional aspects of sexuality in this section.
Some people feel that their bodies and minds don't quite match up. Gender reassignment helps transsexuals reconcile their physical gender to their mental gender. But how are such surgeries possible? See more »
The evolutionary rationale behind the male orgasm is obvious -- it's the female orgasm that's a little more obscure. Is it an evolutionary necessity or a lucky accident that's on its way out?
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Most of us have heard the talk about oysters and chocolate, and maybe you've read an article about the stimulating effects of ginseng. But garlic, licorice and cucumber? Learn about the history of aphrodisiacs and whether they’ve been proven to be effective.
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Imagine feeling like you were born into the wrong body. People with gender identity disorder (GID) suffer persistent dissatisfaction with their gender identity. But is it fair to call GID a psychological disorder?
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Some people feel that their bodies and minds don't quite match up. Gender reassignment helps transsexuals reconcile their physical gender to their mental gender. But how are such surgeries possible?
See more »
Reproduction is a basic drive in all animals, including humans. Think you know what human reproduction is all about? Discover the biology of sex.
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Making love. A roll in the hay. The mattress mambo. Doin' the deed. Ready to test how much you know about sex? As Marvin Gaye would say, let's get it on.
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Is beauty in the eye of the beholder? What does our biology say about what we find attractive in a mate?
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When we're talking about the big O, we don't mean Oprah. Sex for many people is just a precursor to this intensely pleasurable event. What exactly is going on inside when you lose control?
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Learn more about what ails you. Here are some common symptoms.
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