In between finding water and figuring out how to grow crops, adjusting to life on the moon ain't easy, which is why the Martin Company designed a 32-foot lunar simulator to prepare would-be moon settlers for the drastic change in environment. In addition to providing living quarters, the "moon-on-earth" would provide hydroponic gardens, an animal colony, a science laboratory, and tanks of algae that would remove carbon dioxide while producing oxygen. A steel globe would trap the lunar simulator in a near-vacuum sphere to reproduce the moon's lack of atmosphere. Five men would live in the globe for a month, while wearing spacesuits and growing vegetables, so they would be better equipped for the problems of living in on a moon settlement.
Read the full story in "Globe Will Train Men To Live on the Moon"