Hiyo! your favourite little old News Agrigator Me, with sciency stuff on Physical Sex development... a fascinating read from Boing Boing.

Gender isn’t a simple thing. A person can be male, female, both, neither, and more–and that identity doesn’t have to have anything to do with the particular genital plumbing they were born with.

But the plumbing itself–the biological sex, rather than gender or socio-cultural sex–is also a lot more complicated (and interesting) than we often give it credit for.