text: do you think this world is being over-populated? if so, then you haven't been to montana. nice.  seriously though, the population problem is not as simple as space for people to live on. people also require arable land to grow their food, access to clean water to drink, and other resources.   we could plunk the teeming masses of india or china into the open spaces of northern canada or the sahara, but if that land can't support agriculture and has only a limited amount of water, it won't do them very much good.