Critics of the selection that's often involved in assisted reproductive technology – picking a 5’10”, blond-haired, Ivy League grad egg donor, for example – say it turns conceiving a baby into a shopping exercise. It’s probably safe to venture, however, that none of the critics envisioned a day when we’d be bar-coding embryos.
Cryopreservation was once the domain of sci-fi novels and B-rate movies. (Think Encino Man.) But it’s increasingly real, as the recent birth of a healthy boy from a frozen embryo created 20 years earlier shows.
The birth, which is reported in a study in the online edition of the journal Fertility and Sterility, sets a record. Until now, no embryo frozen for this long has resulted in a live birth.
You aren't yourself anymore. It's a familiar complaint heard by women who have recently gone on birth control pills. Now studies are providing evidence for what many of those women, and the men who love them, have long known intuitively: the pill can alter the female brain, making a woman act like a different person.
For Fred Astaire, it was best done cheek to cheek. Madonna made it all about getting into the groove. And Outkast advocated shaking it like a Polaroid picture. Dancing can take many different forms. But which is proven to attract more members of the opposite sex? Science has been silent on the subject until now.
The sex habits of mice have long been an intriguing subject for scientists. Now, mouse sex just got a lot more interesting for the rest of us.
A group of Korean geneticists has altered the sexual preferences of female mice by removing a single gene linked to reproductive behavior. Without the gene, the mice gravitated toward mice of the same sex.
Five amazing, clean technologies that will set us free, in this month's energy-focused issue. Also: how to build a better bomb detector, the robotic toys that are raising your children, a human catapult, the world's smallest arcade, and much more.