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Onshore algae farms could feed the world sustainably
(news.cornell.edu)
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this post was submitted on 16 Jun 2023
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It's not ready, yet. But it could get started in places baking in too much solar.
Buildings are still SUPER expensive, both up front and in an ongoing way. Personally I think it's a bit misguided to promote vertical farms when we are currently wasting so much space to create e.g. parking lots, or to grow corn to burn in cars.
Tall buildings are good for housing people though.
Use old mines and go down. π But yes, there are other land wastes we can go for right now.