1. Terrestrial systems of the Arctic as a model for growth and survival at low temperatures 2. Geothermal Steam Vents of Hawaii 3. Solar Salterns as Model Systems for the Study of Halophilic Microorganisms in their Natural Environments 4. Great Salt Lakes as a Model Hypersaline System 5. Plants and Salt: Plant Response and Adaptations to Salinity 6. Microbial Ecology of the Namib Desert 7. Endolithic Microbial Communities as Model Systems 8. Survival of Subsurface Microbial Communities over Geological Times and the Implications for Astrobiology 9. Under what kind of life system could space life emerge?