The 48th International Conference on Environmental Systems (ICES 2018) will cover all topics related to humans living and working in extreme environments with applications inside or outside of terrestrial or outer space habitats or vehicles, including aerospace human factors; environmental control and life-support system technology; environmental monitoring and controls; planetary protection; EVA system technology; life sciences; planetary habitats and systems; and thermal control systems technology for both manned and unmanned vehicles. The conference is open to participants from any nation, from academic, government, or industry organizations. There will be four days of technical presentations, with approximately 40 sessions. The conference is organized by the ICES Steering Committee and supported by the ICES Thermal and Environmental Control Systems (TECS) Committee,  ICES International Committee (INT), American Institute of Chemical Engineers (AIChE) Environmental Systems Committee, the American Society of Mechanical Engineers (ASME) Crew Systems Technical Committee, and American Institute of Aeronautics and Astronautics Life Sciences and Systems (AIAA-LS&S) Technical Committee.