the i guess the answer for america is to close our borders tight. because our population is not growing from births, its growing from the number of immagrants that are coming here, mostly from third world countries.

the problem with food and all of that would be much easier to take care of if you take care of the base problem: EDUCATION OF WOMEN. there is a saying

give a man a fish and you feed him for a day.
teach a man to fish and you feed him for a life.

let me paraphase that a bit.

give a man food and you feed him for today.
teach that man and you feed him for his life.
teach his wife and you feed his family for life.

there is a very close corrilation with the levels of education of the women of different groups around the world and the birth rate. the higher the level of education, the lower the birth rate, the lower the level of education, the higher the birth rate.

if you want to improve the quality of life, teach the women of third world nations and they will take care of the problem of over population. in many parts of the world, women are not allowed to be educated. in the countries you find the women pregnate a large percentage of their reproductive life.
the more man learns, the more he realises, he really does not know anything.