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

  1. Biosphere 2 was a closed system with 3,800 plant and animal species and eight humans.
  2. Slow crop growth, insufficient food, injuries, and low oxygen levels problematic.
  3. External intervention ended the experiment early.
  4. Highlights unforeseen challenges in space.

References