sex

Oh, behave!:  Science Nation/National Science Foundation

The sage grouse, which is sort of like a more interesting type of chicken, has long captivated scientists as well as tourists because, of its elaborate mating habits. A group of researchers have infiltrated the grouse world using a custom-designed "fembot" -- a robotic bird on wheels with a camera nestled in her breast.

It only takes about 20 minutes after the last time you had sex to become a "virgin" again. That's if you've shelled out $29 for the Artificial Virginity Hymen.

The product has been getting some press, after conservative Egyptian politicians said they want the product banned. They're concerned that brides might use the product to fake their virginity, according to a report by the Associated Press.

A pair of MIT students claim that they have created an algorithm that outs gay members of Facebook by analyzing the sexual orientations of their networks of friends.

The students first analyzed the networks of people who publicized their sexual orientation on Facebook. Turns out that statistically speaking, gay men have more gay friends than straight guys do. So then, they used an algorithm to run the stats on men who kept mum about their sexual orientation on the site. Their computer program was able to correctly identify 10 men whom the students personally knew to be gay in the real world but who hadn't shared that fact on Facebook.

According to a new report from the prestigious London School of Economics, birth control is a less expensive way to reduce carbon dioxide emissions than most green energy strategies.

Sex for a female Lake Eyre dragon lizard is sometimes like going to bed with a man and a roaring chainsaw. The male lizard bites her neck before mounting her. If he sinks his teeth in with too much vigor, he can chomp her spinal cord and kill her.

So it's no wonder the lady lizards are choosy about sex.

When it comes to contraception, women have their pick of techniques. In addition to sperm-blocking barriers and foreign objects in the uterus (IUDs), there are about a million ways to pump extra hormones into the bloodstream (pill, patch, ring, shot, or implant).

For men, it's always been pretty much condoms or a vasectomy.