Quote:
Originally Posted by M II A II R II K
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If one assumes (as I try to do) that a huge die back is not close at hand, and, if one also assumes that the population will top off at 9 or 10 billion, we soon will have even more people to feed. This will become increasingly urgent as petroleum feed stock becomes too expensive to be used to manufacture fertilizer.
We can eat algae, particularly if the algae we produce becomes a feed stock to the food processing industry. IMO, we might be able to 'recycle' 40-50-or even 60% of the organics we consume, via wide scale, well designed algae farm systems. In addition, if after some processing, we feed mildly processed algae to highly efficient carbohydrate to protein converting animals, such as chickens or various aquaculture tolerant fish, we could eat meat and fish too.
The key to all of this, IMO, is our ability to remove heavy metals, medicinals, etc., from brown water. What is left, human waste, is one of the best fertilizers known, as the Japanese have understood for centuries.