Votorx said:
really...why the girls population and not the boy population?
In china, the male children are expected to take care of their parents when the parents are too old to take care of them selves. Females are married into other families with no such obligation. So, due to the laws they have reguarding the number of childeren a family can have, alot of the families kill daughters and keep sons. It's primitive social security.
As for the other question:
I don't know of anyway that is particularly fair or nice.
Go to war?
Weaken an enemy and reduce your population at the same time. Plus, with that large of an army, you might beable to actually expand your holdings, at least until the rest of the world gets involved.
So, go to war, and piss off the US. That way, not only will you thin out your population, but after they bomb you, they will give you tons of cash too.
Use the cash to work more on your space prgram and then start a colony ship. Hell, the thing doesn't have to work great. Load up some more of you people on this ship and blast them out into space. They are exited about being space colonists, and you clear the population some more. If the ship doesn't work great and fails somewhere out in space, you just tell the population that contact has become impossible and they are hailed as heros.