The global environment is being pushed to its limits in terms of producing enough food. Though limits to food production such as water availability have been pushed back, they are still in place. It is likely that shortly the global system will not be able to produce enough food for its population. What then? There exists a tremendous bubble economy based upon unsustainable use of the Earth which will one day have a day of reckoning.

ENN News Story - Grain harvest predicted to fall short of world demand
This year's world grain harvest will increase to a record level but will still fall nearly 60 million tons short of what 6.4 billion people and more than 1 billion livestock will consume, an environmental group predicted Tuesday.