World population is set to stabilize by the year 2050 assuming the current trend continues. This is because as countries develop economically and socially people have less children because of a whole host of different factors, including availability of birth control. Although this development is tied somewhat into the spread of democracy, all signs are this trend will continue as both wealth and democracy spread. The rate of world population growth is slowing rapidly as we speak, overpopulation is not a real problem. End of story.