O Gentlemen, Soylent Green is a sustainable solution to our problem.

Soylent Green is....people. IT"S PEOPLE!!

beaten by seconds---SECONDS!  I was busy looking on youtube for the Phil Hartman video clip from SNL!!

I was beaten too, in the previous page by Darth Tigris that offered the other solution too, Terra Nova (that game was awesome!).

Anybody with a garden could grow their own food, or atleast part of it, in the form of vegetable patches or fruit plants/trees... even those without gardens could do some growing in plant pots. Small things such as tomatoes or beans work well like this and afterall even if it is on a small scale it helps to alleviate the problem especially if we all did it, take a look at this http://www.onepotpledge.org/getgrowing.html another advantage of that is that ultimately it also save you money and it tastes better.

Another thing that would help along similar lines is by trying to make sure that as much space in our cities and towns are used to grow gardens, by this I mean on the roofs of suitable buildings and such. I suppose one of the best things we could do would be to 'keep bees' in such places (although I understand how that might be undesirable in its own way) too because we really don't want them becoming endagered or even extinct.

http://www.zeitnews.org/agriculture-research/
http://www.renewable-energy-news.info/benefits-of-green-roofs/
Quite Ironically those two links popped up when I searched 'roofs' because it just didn't look right and just happened to be relevent what I was writing about.

Ofcourse there are larger scale more industrious ways to produce more food such as 'Hydroponics' or 'Vertical Farming' these are two different methods that promise greater yeilds all year round and are a far more efficient use of space. You see the problem right now isn't so much that we are running out of space it is that we aren't using the space we have to its maximum potential.

They'll feed us food that makes us esterile and produces cancer... Oh, wait! That's already happening!

Erm....no because then it wouldn't be a mass extinction. The whole idea of one is that a large number of animal species being wiped out in a very short space of time. Think about it, the Dinosaurs were wiped out 65 million years ago, not over a period of 5 million years 65-60 million years ago.

We'll be moving to space fools

I read somwhere that the worl population is expected to increase until 9 billion, and then start to slowly decrease. This is due to effects of large developing nations becoming wealthier and education levels increasing, which usually results in less people being born. Interestingly, the OP stopped the prediction at the 9 billion and didnt continue.

Or the population pulls a Germany. And then the government will start to incentivize childbirth.

A noble concept and indeed one I agree with but ultimately flawed.

There may be plenty of space to cultivate food but why are so many millions in the third world starving and food prices in the developed world rocketing? How are more people going to make this easier? I guess the answer would be better global management but so far this hasn't happened and I won't hold my breath.

Apart from food, for the past few decades North America, Parts of Europe and Japan were largely the major consumers of the world's resources. Some 800m people give or take.

Now with China and India adding a potential 2.5b to the mix with their rocketing economies these already strecthed resoures will be pulled even further.

Listening to certain politicians in the west some (if not scretly all) see a major conflict in the future between east and west over said resources.

I agree.