https://en.wikipedia.org/wiki/Biosphere_2
However, it hasn't been operated as a long-duration closed-cycle ecosystem since 1994. It's surprising to me that lots of people talk about bases on the Moon and Mars, but basic fundamentals like this are neglected.
https://en.wikipedia.org/wiki/Biosphere_2
However, it hasn't been operated as a long-duration closed-cycle ecosystem since 1994. It's surprising to me that lots of people talk about bases on the Moon and Mars, but basic fundamentals like this are neglected.