What would you do for a long-lasting, but reversible male birth control? It'd be something you could get done once in a while, like some forms of hormonal birth control for women, instead of having to remember every time you have sex, like you do with condoms.

Would you be okay with injections of nanotechnology? How about getting your testes zapped with infrared light?

A team of biologists has developed a clever way to reversibly kill sperm cells that works something like that, Chemical & Engineering News reported. So far, the biologists, all from Anhui, China, have only tested their method in mice.