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12 points
A fascinating alternative is “a pressurized ETFE membrane… periodically anchored to the ground by steel cables.”
In plain language: Fiber-reinforced rip-stop ETFE (a thin, strong, light, transparent material used for yacht sails) is used to make a roof and walls with the area under it pressurized and anchored using very tall cables, hundreds of meters high or more, to create a sky. The covered area is huge, the size of a city, compartmentalized for redundancy. People are able to go about their daily lives without use of space suits and it doesn’t feel like you are “inside”.
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