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A City on Mars: Reality kills space settlement dreams
(arstechnica.com)
This is a most excellent place for technology news and articles.
They would ship in a new scrubber but could they? We have to assume that a colony might need to self subsist for long periods, at least as long as Biosphere 2 was running, because of the practical considerations in shipping replacement parts to Mars.
Yeah, absolutely they could. It's a very romantic notion to, I dunno, send thousands of people to fuck rust on Mars until they die for absolutely no reason, but the reality is that they're not gonna put the money into a colony off Earth until they know they can set up a shipping route and there'll be something valuable coming back. That means regular trips to said colony.
If they put it on Mars, it's because they realized all that rust is really valuable or something. More likely it'll be the asteroid belt. But there will be regular shipping.