Why We Cheat

'The only completely, fatalistically monogamous animal we've been able to identify is a tapeworm found in the intestines of fish,' Lipton tells ish...

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Sexual Orientation

Sexual orientation is a term used to refer to a person's pattern of emotional, romantic, and sexual attraction to people of a particular gender (ma...

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Guide to Masturbation

Masturbation is the self-stimulation of the genitals to achieve sexual arousal and pleasure, usually to the point of orgasm (sexual climax). In add...

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Male Reproductive System

Semen, which contains sperm (reproductive cells), is expelled (ejaculated) through the end of the penis when the man reaches sexual climax (orgasm)...

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Science Behind Romance

When we’re looking for love, we often look for specific characteristics: a sense of humor, perhaps, or financial solvency and kindness. Our choice ...

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Chocolate's Dark Secret

The chocolate bar came along later in the 18th century, by mixing chocolate with milk. Chocolate really can be good for you, but not all chocolate ...

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