Life on Earth has evolved within the protective blanket of our atmosphere closely coupled with its environment. With space technology, the range of human action has extended into regions which are vast and hostile to any life form. To live in this environment of space, man or any other biological system requires a protective shelter equipped with an efficient life support system. The fifty-nine papers contained in this volume are categorised under the following section headings — Bioregenerative Life Support Experiments in Space and Their Applications; Dietary Considerations for Bioregenerative Life Support Systems; Instrumentation for Control of Plant Health and Growth; CO2–O2 Temperature Interaction in Plant Growth Systems; Methods for CELSS Control System Development, Performance and Demonstration; Control of Micro-Organisms in Plant Growth Systems; Use of Local Soil Materials for Planetary Closed Ecological