steingar
Taxi to Parking
Well open your eyes a bit wider deary. Every day we lose fresh water from our aquifers that ends contaminated, polluted, and typically saline. None of the above will support human or most non aquatic life. We need clean fresh water. The world has been in over all drought condition in much of it's arable land regions for quite a few years now. Even China is importing food for the first time, and leasing farm land from Russia. NEVER in history has China not been able to feed itself internally.
The Chinese are having trouble feeding themselves because they decided to build manufacturing facilities on fertile farm land, of which China has not nearly enough. Henning's point about fresh water is correct though. Much of the world's population depends on glacial runoff, and the glaciers are retreating. Water can be shifted globally to forms that are not useful to humans, affecting the world's carrying capacity. Given the continual drying of the African continent, I suspect that carrying capacity is already in retreat.