Sex

Sex and sexuality is about more than just two people, a bed, and a few aphrodisiacs. Scientists study why humans have sexual intercourse (it is good for you and good for the species) and how sex is driven by evolution, genes, emotions and more. There is also much to learn about the differing roles of men and women in the whole mating game. Yes, there's lots of science to explore. Not that an aphrodisiac isn't more fun.

Latest about Sex

closeup of an adult's hand holding a swab used for STI testing in a sealed package, a sample collection tube, and a piece of paper that reads "chlamydia pcr testing" at the top

Why are sexually transmitted infections on the rise in the US?

By Carissa Wong published

Surging STIs are being driven by a "perfect storm" of factors in the U.S.

young couple embracing at a barbecue with friends

6 interesting effects of oxytocin

By Lou Mudge last updated

It might be known as the "love hormone", but there are many different effects of oxytocin.

man waking up from sleep

Sexsomnia really exists — here's what to know about 'sleep sex'

By Amy Arthur published

Sexsomnia is a disorder that leads people to perform sexual behaviors while they're asleep.

An example of a organ on a chip device; the small, clear device has two colored channels crisscrossing its center. Someone is holding the device between their pointer finger and thumb

Scientists invent 1st 'vagina-on-a-chip'

By Nicoletta Lanese published

The first vagina-on-a-chip replicates the cellular environment of the vagina.

histological image shows a cross section of clitoral tissue, stained blue; bundles of nerve fibers look like clusters of blue dots

In a 1st, scientists counted all 10,000 nerve fibers in the human clitoris

By Nicoletta Lanese last updated

The clitoris contains thousands more touch-detecting nerve fibers than once thought.

couple-bed-upset-11082402

Men's and Women's Personalities: Worlds Apart, or Not So Different?

By Rachael Rettner last updated

Men and women's personalities are worlds apart, a new study says, but other researchers say it ain't so.

Couple Bed Upset

Men's and Women's Personalities: World's Apart, or Not So Different?

By Rachael Rettner last updated

Men and women's personalities are worlds apart, a new study says, but other researchers say it ain't so.

Cuddling releases oxytocin

Oxytocin: Facts about the 'cuddle hormone'

By Stephanie Pappas, Ailsa Harvey last updated

Reference Oxytocin is a hormone that plays a large role in social interactions and social bonding.

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Vagina diagram

7 facts about the vagina

By Linda Thrasybule, Ailsa Harvey last updated

Reference Women's vaginas are often misunderstood. Here are the facts.

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A fetus in utero from Gray's Anatomy.

Fetal Testosterone May Program Boys' Behavior

By Live Science Staff last updated

Testosterone levels in the womb might program certain behaviors later in life, new research shows.

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