The world is getting poorer due to over population, there are only so many resources yet the resource consumers keep becoming more and more. A pie is only so big, the more mouths you have to feed the smaller everyones piece of the pie becomes.
World leaders need to seriously address over population, we are heading for a disaster and keeping on multiplying is not sustainable. If there are fewer people needed to spend resources on there will be enough for everyone and we wont need to take measures for pollution and global warming. Everything will be cheaper because the demand wont be so high and everything wont get depleted so fast.