text: do you think that the expanding cities on planet earth will ever stop.if not what will happen? do you think that we should not ever try to curb population growth as they are doing in china.because when this planet gets too crammed human-kind will find another planet to populate before a calamity of too many people. fifty years plus from today? population growth is falling in many parts of the world, and has been for years. some expect the population to top out around 2060 and then fall for a while.  in many regions with ongoing population increases, you can blame religions and religious governments (see: gw bush) that actively work against the use of condoms and other birth control methods.