Ecologically designed human communities might incor porate microfarms with controlled cultivation in a greenhouse or bioreactor. On a tiny land area, a commu nity could meet a significant portion of its protein and vitamin requirements from microalgae, thus freeing crop land for community recreation or reforestation.
Most advanced farms designed to produce high quality microalgal biomass necessarily have higher production costs. To lower costs, the ecological farms of the future need to integrate their sources of nutrients and energy, and produce a variety of end products, from valuable extracts to inexpensive protein.
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