umm, first of all, don't you think the term 'midgets' is a bit.. rash? oh well, nvm.
hmmm, i don't think the 'western world' will run out of food ANYTIME soon. i mean, they /do/ have a lot of people who eat a lot, and the food supply is more than enough to accomodate the current population and even a larger population. if you want to talk poverty, talk asia or africa. they KNOW how it's like to be hungry, or to eat a spoon of rice a day (not exaggerating). perhaps nothing at all.
about the height thing and asians being small. i dunno, it could be a racial evolutionary adaptation. caucasians are tall with very fair skin because they live in the areas of the globe where little sunlight reaches them. so, in turn, they produce very little melanin and increase their skin's surface area by getting taller. they also probably develop a slower metabolism due to the cold winters they experience. asians, on the other hand, have a relatively short build and relatively tan skin because most asians live in the tropics (populations...) and have a more active lifestyle. it would be difficult to run around and hunt tropical rainforests when you're tall and lanky. asians are proabably also less likely to be obese because they probably have faster metabolisms so fat doesn't build up in thier bodies and get them too hot. the tan is obviously because the countries are near the equator so they recieve a lot of exposure from the sun, thus the skin copes by genetically embedding a code for the appropriate amount of melanin to be produced by the skin.
i'm asian, by the way. not telling more.
we are continually evolving, so it's really a bit hard to predict what we'd look like in the future(unless of course, if we manipulate our genes so we all look like supermodels or something). we could go shorter, or we could get taller and lankier because of some bizarre natural accident or something.
hn, i wasn't much help, wasn't i? sorry about that..