The basic problem in Rio is that the lower classes reproduce at a far greater rate than the middle class. Every year, the Favelas grow larger and larger, and t

The basic problem in Rio is that the lower classes reproduce at a far greater rate than the middle class. Every year, the Favelas grow larger and larger, and the habitable areas shrink ever smaller. What kind of policy would you recommend to fix this? Is it the responsibility of the middle and upper classes to support the fertility of the lower classes? As for Buffet, who do you think will spend $50 billion in a more socially productive way: United States Government or the Bill and Melinda Gates foundation?