The Girl Effect

I'm not sure how long this has been around, but this makes an enormous amount of sense.

Here are some quick facts from the website:
1) When a girl in the developing world receives 7 or more years of education, she marries 4 years later and has 2 fewer children.
2) Educated girls grow to be educated women, who end up having healthier babies.
3) When girls earn an income, they reinvest 90% of it back into their families
4) 75% of HIV-infected youth in Africa are girls