The inhabitants of China’s Lunar Palace biosphere lived on recycled oxygen and water, and grew their own food for a record-setting 200 days without outside intervention
Source:
https://www.newscientist.com/article/2268836-crew-of-mock-lunar-biosphere-grew-food-and-made-oxygen-for-200-days/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home