Yr concern for high population is correct. We hv only 2.4% of world's land, but already hv 16% of its population.
But u r wrong in assuming that one child norm will reduce it, as two parents will hv one child. This is so, bcz population also depends on the average age of parents, when the child is born and longevity of parents. Average age of people at the time of death is increasing due to improvement in medical area. For example, China is following one child norm since 1979, but its population is still increasing @ 0.6%, compared to 1.6% of ours.
