this would be a cool gift

Cool idea. But will die eventually. There is no such thing as a mini-biosphere. At least, not that scientists have discovered so far.
 
yeah, but they are pretty clear that it won't last forever. It says 2-3 years, although some have gone as long as 7. I'd like one, more as a centre piece to the dining room table maybe? Its neat, looks stylish.
 
That's actually pretty neat. Although, if someone were so inclined it wouldn't take that much effort to put one together without buying it.
 
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