Submitted by peregrinkm t3_111ath4 in Futurology
SandAndAlum t1_j8fkt80 wrote
Reply to comment by KYWizard in Would an arcology be conceivably possible? by peregrinkm
I would have thought redundancy would be the way to go. Four or five different ecosystems which are isolated and produce enough of a surplus to export food and air for a year or two. Refugees can move into a quarantine zone while restoring their ecosystem.
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