Everyone on Earth has been through it, but there's a lot about birth that you're probably unfamiliar with. Here's thirteen facts about the human birthing process you may not have picked up in biology class. » 7/23/14 2:30pm Wednesday 2:30pm

It's called One Fast Cat. At 48-inches across, the circular, cat-powered cat-treadmill is a gigantified version of the exercise wheels commonly associated with lab rodents. It's designed to help your feline companion exercise indoors, when it isn't busy bringing death and destruction to the outside world. » 7/20/14 9:27pm 7/20/14 9:27pm

This is simple, charming video, but there's a lot of things worth noting here. » 7/12/14 3:46pm 7/12/14 3:46pm

A child delivered last week in California could well be the first healthy baby born in the United States "with his entire genetic makeup deciphered in advance," according to MIT Technology Review. » 6/15/14 8:06pm 6/15/14 8:06pm

A handful of girls diagnosed as having 'Syndrome X' seem to defy one of the biggest certainties in life: aging. Scientists who are working to understand this rare condition say it could inform our efforts to radically extend the human lifespan. » 5/20/14 5:09pm 5/20/14 5:09pm

When it comes to scientific studies of genitalia, whether it be human or otherwise, there's an unquestionable bias towards penises. As a new study shows, it's problem that's actually getting worse — and it's getting in the way of science. » 5/07/14 5:31pm 5/07/14 5:31pm

Because we did not. Had we known, we might have been prepared for the high-octane adorableness you, yourself, are about to experience. » 4/13/14 5:47pm 4/13/14 5:47pm

Adorableness, that's what. » 3/23/14 4:30pm 3/23/14 4:30pm

Northwestern Medicine professor Alice Dreger writes in Pacific Standard that although gender roles are largely socially constructed, there is a strong genetic/evolutionary basis for them as well. » 3/21/14 12:40pm 3/21/14 12:40pm

Regardless of your stance on Valentine's Day, there's no way to avoid being bombarded with romantic imagery. So you might as well take this as an opportunity to learn something new. With that in mind, here are ten things you probably didn't know about sex, love and lust. » 2/12/14 2:15pm 2/12/14 2:15pm

This little cub has dealt with more than his share of struggle in his brief life. One of three male cubs born at the Toronto Zoo last November, he was the only one to survive more than 48 hours. When his mother had trouble nursing him, staff at the zoo's Wildlife Health Centre decided to intervene in the cub's… » 1/26/14 5:59pm 1/26/14 5:59pm

Virgin births: not just for teen Jewish girls hanging out in Bethlehem barns anymore. According to research, almost 1% of American women claim that they, too were unpenetrated by the peen of a man when they became pregnant. » 12/18/13 12:20pm 12/18/13 12:20pm

Japanese researchers have tested whether or not cats recognize their owners' voices. The good news: they can. The bad news: they're probably going to ignore it. » 12/01/13 8:30pm 12/01/13 8:30pm

One of the classic images from evolutionary theory is of two males smashing each other up to compete for the chance to fertilize a female. Scientists have spent over a century studying this kind of male competition, but new discoveries reveal that competition between females is just as important. » 11/11/13 4:42pm 11/11/13 4:42pm

This obscenely adorable (and still unnamed) little lion cub was born on September 26th to a lioness named Masha at the Belgrade Zoo. HEAR HER ROAR. » 10/05/13 1:57pm 10/05/13 1:57pm

What started as an investigation into developmental mouse biology has become a lot more than that. Biologist Katsuhiko Hayashi discovered a way to turn mouse skin cells into sperm and egg cells — and actually used these modified cells to create a living baby mouse. The question is, can it work in humans? » 8/21/13 9:59pm 8/21/13 9:59pm

In case you still doubted that dolphins have an awareness rivaling our own, new research shows that these cetaceans can remember the whistles of their old tank-mates after being separated for more than 20 years! No species other than humans has demonstrated such a long-term social memory. » 8/07/13 10:00pm 8/07/13 10:00pm

Humans can have sex anytime we damn well please – so why do we mostly do it in the dark? Here's what science has to say about our preference for nighttime hookups. » 6/27/13 10:03pm 6/27/13 10:03pm

Guys. YOU GUYS. Baby snow leopards. On camera. Live. Right now. QUICKLY YOU GUYS THEY'RE PURRING. » 6/24/13 10:05pm 6/24/13 10:05pm

Clearly the First Wives Club was onto something. They can't tell us what to do, they can't tell us what to say, but they may have dried us up at 50 because they started going for the young ladies. Cool. » 6/15/13 5:30pm 6/15/13 5:30pm