How long can nutrients found in Mars along with an algae diet sustain human life?
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2$\begingroup$ @uhoh maybe I should take this to worldbuilding? $\endgroup$ – Muze Dec 17 '18 at 4:07
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$\begingroup$ That might be a very good idea for this particular question, yes. $\endgroup$ – uhoh Dec 17 '18 at 4:10
