Most women have wondered at least once: why is there no birth control pill for men?  It’s a good question!  Perhaps more broadly, why are women asked to make tough choices about their bodies and health for the sake of preventing unwanted pregnancies, while men usually don’t think further than tearing the condom wrapper.

While this new technology isn’t a pill, it would offer a contraceptive alternative for men besides condoms and vasectomies.  A sort of reproductive middle-path.  Australian scientists are developing a radio-controlled contraceptive implant that is put inside the vas defrens (a doorway in the male body which lets sperm travel from the testicals to the penis.  When triggered, the new device would simply block this migration.  At least temporarily.

The catch?  The valve can potentially become blocked by protein, perhaps resulting in permanent infertility. For this reason, the scientists authoring this new option reccomend it be used only for men already considering vasectomy.

http://technology.newscientist.com/article/dn13232-sperm-tap-planned-for-reversible-vasectomy.html