Without This Protein, Part Of The Brain's Sex System Would Die

Sometimes, bad luck leads to insights. A study published today in the Journal of Clinical Investigation has added a new twist to our understanding of the way the system that controls puberty in mammals develops inside the brain – thanks to two brothers who both inherited the same rare disorder.
» 5/18/15 5:03pm 5/18/15 5:03pm

You're Looking at an Insect Penis Inside its Mate

One of the biggest challenges for scientists studying the anatomy and physiology of genitalia is the fact that much of the real functional action happens deep inside females. It’s hard to see what’s going on in there. That’s why I love studies that rise to the challenge of giving us a peek inside. » 5/15/15 6:30pm 5/15/15 6:30pm

Three Things You Probably Didn't Know About Crab Lice

Crab lice (Pthirus pubis) aren’t crabs at all—they’re parasitic insects that feed exclusively on human blood, and their bites can cause intense itching in their hosts. Often, this itching happens in the pubic area, which is why they’re also known as “pubic lice”—which, it turns out, is actually a misnomer. » 5/15/15 4:54pm 5/15/15 4:54pm

There Was No Viagra in 1918. But There Was This Penis Splint.

Nearly 100 years ago, there was no drug to help with erectile dysfunction, but Bernard Scheinkman came up with an alternative. It’s not clear whether this nightmarish penile splint was ever manufactured — but you have to love the baroque logic of combining a cock ring, an open condom, and a shelf. » 5/15/15 1:00am 5/15/15 1:00am

In A Snake Orgy, Ejaculate Can Get Expensive

Every spring, male red-sided garter snakes enter the mother of all meat-markets. While mature males can breed every year, females are only fertile once every three years, which puts them in very short supply. The result? Snake orgy, obviously. But for male snakes, this sexual free-for-all comes at a surprisingly high… » 5/11/15 1:20pm 5/11/15 1:20pm

What Made the Y Chromosome So Tiny?

The Y chromosome, a chunk of genetic code that is unique to male mammals, isn’t just physically smaller than the X. It also contains far fewer genes. The X has more than 1000 genes, while the Y has fewer than 200 —and most of them don’t even work. Why do men have this odd, stunted chromosome in their genomes? » 5/07/15 7:40pm 5/07/15 7:40pm

This Shrub Uses a Moonlight Beacon to Signal That It's Ready for Sex

When it’s time for sex, many plants literally tap into animal appetites, attracting them with the promise of sugar and smearing them with pollen while they eat. But if you’re going to rely on a third party for sex, you need some really good advertising. One recent study has identified a plant that makes a beacon out… » 5/06/15 2:13pm 5/06/15 2:13pm

Most Young Americans Think Premarital Sex is No Big Deal

American attitudes about sex continue to change, from one generation to the next. A new study from San Diego State University using data from the General Social Survey, published today in the Archives of Sexual Behavior, shows that Millennials are more likely to think premarital sex is OK than their Boomer or Gen-X… » 5/05/15 3:43pm 5/05/15 3:43pm

Female Orgasm Explained With Fifth Grade Science Experiments

Talking about sex doesn’t have to be X-rated – and in some cases, it shouldn’t be. That’s why I love this video from Wired’s Data Attack team, which illustrates facts and statistics about women’s orgasms using classic elementary school experiments. You’ll never look at the egg-in-a-bottle experiment the same way again.
» 4/30/15 5:07pm 4/30/15 5:07pm