One of the benefits of improving technology is our ability to grow more crops per acre than before, resulting in an exponential growth of the availability of food. However, the Earth's human population is also growing exponentially. In fact it is growing faster than the rate of available consumables. 1978 was the year the two rates crossed. Before that point, we had the ability (but did not do so) to distribute equally among all of earth's population enough food so that no one would have to die of starvation. Since that date however, Earth's population has eclipsed our ability to grow crops (including farm animals). What this means is that even if we tried to distribute enough food for everyone to eat, many people would still have to starve to death because there just isn't enough to go around. This presents one hell of a future shock scenario. Remember the days of gas rationing during the 1970's? Well imagine calory rationing. 1000 Calories a day and pray you stay alive. In the coming century this will become evident in third world countries first, where the famine will become very wide spread. Eventually though (very possibly even during our life times) the famine will spread to urban areas, developed countries, even the wealthy will become affected. So far the only real solution is aquaculture - the idea of growing fish away from the ocean. Currently our ocean-based food is still derived by a hunter-gatherer method where large fishing fleets go out and hunt for fish to bring back home and eat. Many hope that Aquaculture will do for our society what Agriculture did thousands of years ago. However aquaculture presents its own problems - mainly that you need to sustain an entire food chain. For example: A mature female codfish lays on average 5 million eggs twice a year. Those eggs take about a full year to reach maturity, and by the laws of probability about half will be male and, the other half, female, will then be able to lay eggs as well. This is all well and good and sounds like a helluva lot of food. Except that the codfish need to eat shrimp. Lots of them. So for every swimming pool of codfish one would need about 5 swimming pools of shrimp. And for every swimming pool of shrimp you need about 5 swimming pools of plankton. And on and on. Idea's and thoughts are welcome - this seems like a far more pertinent problem even than the looming natural gas crises.