And....Science FIction catches up to us:

[alfreda89]

http://health.msn.com/pregnancykids/greenarticlepage.aspx?cp-documentid=100171768>1=10547

Are boys becoming an endangered species? Check out this article and see for yourself.

Comments

[oliana0.livejournal.com]

I've heard that male fetus are less likely to carry to term than female and that infant mortality is higher in boy babies than girl babies.

I don't remember when, where or from whom I heard that so don't go quoting me as a source.

[starcat-jewel.livejournal.com]

Humanity's survival is not endangered by a shortage of men. Women are the population bottleneck. As the filk goes,

"If I ate your men, would your numbers decline?
Of course not -- the rest would just make better time!
But the number of children a woman can bear
Has a limit, and that's why my pruning's done there,
But an orphan's a sad sight, and so when I munch,
I'm careful to ask only virgins to lunch!"

Of course, if you include the unexpressed assumptions that (1) men and women must pair off one-on-one, (2) there is never any kind of cheating on the above, and (3) social customs will never change to fit changing circumstances, then there would be much more cause for concern.