is a decline in population in developed countries. One of the major problems is overpopulation in third world countries which are far more vulnerable in terms of mortality, starvation, lack of industry and other such problems.
I think the main solution is not to cut down population in countries where education and nedicine are kept apace with the population, but find ways of distributing contraception and cutting down the population in countries where while families are homeless, starving, abused and killed. Once those groups have managed to stabilize their population, gain educations and the tools to survive, then we can find more ways to help all the billions of people in the world. But by then, the number of developing countries will subside, and there will be a healthier world population where further solutions can be decided.
But that's not really the question I had in mind--I'm afraid I was trying to be more esoteric than pragmatic!
BTW, I read an article recently on China, which has had the "one child" law for years, and they only recently found out that they would be underpopulated within a given number of years if that policy continued! So now the laws are being relaxed in order to keep the general numbers in population. 
Edit history
Recommendations
0 members have recommended this reply (displayed in chronological order):
= new reply since forum marked as read