3 ms·
Here's one example, and references to several others: https://en.wikipedia.org/wiki/Biosphere_2 https://en.wikipedia.org/wiki/Biosphere_2
by greglindahl 10y ago
Here's one example, and references to several others: https://en.wikipedia.org/wiki/Biosphere_2 https://en.wikipedia.org/wiki/Biosphere_2