[Vince Ferrer]

The question is what will happen in Africa, particularly sub-saharan Africa.

The same thing, it is just behind the curve. One of the big factors driving the birth rate is actually urbanization and population density. Africa is urbanizing at a fast rate, like Asia 30 years ago.

[Chickensoup]

I understand that there are some ghost cities, empty ones in China.

African migration should be directed there.