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I don't see why food production should be limited to sunlight: we're likely going to have fusion power before we hit any kind of real food cap (ie, limit on growing rather than hunger based on poverty or distribution problems).

Why not grow large tanks of GMO algae with fusion power?

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GMO algae or yeast grown in tanks as a complete protein to replace the resource wasteful meat we eat so much of is a really good idea.

I expect it is the future and wish there were more work being done on it right now.

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