"O'Regan, Emlyn" wrote:
> Now for ten points...
>
> In a discussion recently the topic came up about an experiment in the US
> which involved a sealed mini-ecosystem replete with people, to see if the
> closed system was viable, or for how long, or something like that. Was this
> kicked off in the 70s?
>
> Obviously my memory of this thing is quite poor. Does anyone have any
> recollection? I can't really look it up on the net, because I can't remember
> what it was called (subject line is my best guess).
The BioSphere II experiment was a celebrated failure for one reason: the concrete structure of the building was absorbing gasses from the atmosphere and altering the stability of the closed cycle, although there were some other minor problems with some holes in their ecosystem as well.
--
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