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Q&A What food production methods would allow a metropolis like New York to become self sufficient

In my overcrowded future setting the Hegemony (government of the Earth) wants to make the metropolises of the world self sufficient when it comes to food production. What farming/food production me...

17 answers  ·  posted 5y ago by Celestial Dragon Emperor‭  ·  last activity 5y ago by Celestial Dragon Emperor‭

Question culture agriculture city