The fact that the population is growing worldwide DOES NOT mean that there is a food shortage. Nobody is disputing that there are more people today than there were a century ago, what you are being asked to provide evidence of is a food shortage.
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The ration of feed vs no feed (hungry) is 18-20 to one.
You can not tell me:
1. how large our annual production of wheat corn oats is?
2. how much (percentage) of this crop is used domistically?
3. how much more land can be put into productionu in USA?
4. how much corn, wheat grain is being shifted to ethanal to power your car? in billions of gallons.
If USA agricultural was in full production could we feed every mouth in the world. And with 90,000 souls added every day for how long?
This is the answer to your arguement?
You need to shift thru facts not emotions.
The answers to your question ONLY matter if there are food shortages in the United States, no such shortages exist. Those are the FACTS.
Of course there are hungry people on earth --- even food-surpus countries have hungry people --- but these are distribution problems, not production problems. You might want to refer to these resources:
The Mathusian problem answered:
http://reason.com/sullum/010500.shtml
http://www.reason.com/rb/rb112002.shtml
http://www.reason.com/rb/rb022603.shtml
On how poverty takes a lot of work on the part of politicians to sustain:
http://www.reason.com/rb/rb091802.shtml
One of the big challenges ahead is the shift in the way people are using grains. If a lot of corn gets shunted off the ethanol production, that will have a big impact on food prices for people who don't have much leeway.
I personally would turn thumbs-down on ethanol unless and until its production can prove rationally profitable in response to the free market (and not governemnt subsidies and pressures).
And India, China and Japan, whose people traditionally ate lots of rice, vegetables, lentils, soy and fish, are eating dramatically more beef every year, which is hugely costly because of the unfavorable plant protein/animal protein conversion ratio.
But they're doing that precisely because they're now more prosperous than they've ever been in their history, largely because they're emerging from the stranglehold of socialism. Population, food, and freedom are perfectly capable of expanding simultaneously.
Something Al Gore has never been able to wrap his mind around.