BLUF
If humans are to survive on other planets, creating enclosed ecosystems or artificial biospheres becomes crucial. There is a long way to go.Summary
- Biosphere 2 was a closed system with 3,800 plant and animal species and eight humans.
- Slow crop growth, insufficient food, injuries, and low oxygen levels problematic.
- External intervention ended the experiment early.
- Highlights unforeseen challenges in space.