<p>PART 1: OPENING CHAPTERS<br>Introduction; J. Seckbach et al.<br>Foreword; R.W. Castenholz<br>Preface; K. Horikoshi<br>List of Authors and Their Addresses<br>PART 2: GENERAL ASPECTS<br>Polyextremophiles and the Constraints for Terrestrial Habitability; M.C. Capece et al.<br>Life on the Edge and Astrobiology: Who Is Who in the Polyextremophiles World; J. Seckbach<br>The Dynamic Genomes of Acidophiles; F. J. López de Saro et al.<br>PART 3: HALOPHILES<br>Two Centuries of Microbiological Research in the Wadi Natrun, Egypt: A Model System for the Study of the Ecology, Physiology, and Taxonomy of Haloalkaliphilic Microorganisms; A. Oren<br>Adaptation in Haloalkaliphiles and Natronophilic Bacteria; H.L. Banciu and D.Y. Sorokin<br>A Random Biogeochemical Walk into Three Soda Lakes of the Western USA: With an Introduction to a Few of their Microbial Denizens; R.S. Oremland<br>Halophilic, Acidophilic, and Haloacidophilic Prokaryotes; H. Minegishi<br>Life in Magnesium- and Calcium-Rich Hypersaline Environments: Salt Stress by Chaotropic Ions; A. Oren<br>Survival Strategies of Halophilic Oligotrophic and Desiccation Resistant Prokaryotes; H. Stan-Lotter and S. Fendrihan<br>Radiation Resistance in Extremophiles: Fending Off Multiple Attacks; K.M. Webb and J. DiRuggiero<br>PART 4: THERMOPHILES<br>Thermoalkaliphilic Microbes; V. Kumar and T. Satyanarayana<br>Acido- and Thermophilic Microorganisms, Their Features and Identification of Novel Enzymes or Pathways; Y. Kawarabayasi<br>Microbial Diversity in Acidic High Temperature Steam Vents; R.L. Weiss Bizzoco and S.T. Kelley<br>PART 5: PSYCHROPHILES<br>Left Out in the Cold: Life in Cryoenvironments; J. Goordial et al.<br>Microbial Diversity and Enzymes in Ikaite Columns; A Cold and Alkaline Environment in Greenland; J.K. Vester et al.<br>Microbial Communities Thriving in Various Ice Ecosystems; B. Sattler and B. Post<br />Snow Algae. Adaptation Strategies to Survive on Snow and Ice; T. Leya<br>Adaptation of Antarctic Freshwater Green Algae to the Extreme Environments; H. Hu<br>PART 6: PRESSURE<br>Deep Sub-Surface Oil Reservoirs as Poly-Extreme Habitats for Microbial Life. A Current Review; A. Wentzel et al.<br>Expanding Limits for Life to a New Dimension: Microbial Growth at Hypergravity; S. Deguchi and K. Horikoshi<br>PART 7: OXYGEN RELATIONSHIPS<br>Microbial Eukaryotes in Marine Oxygen Minimum Zones; W.D. Orsi and V.P. Edgcomb<br>Deep Hypersaline Anoxic Basins as Model Systems for Environmental Selection of Microbial Plankton; A. Stock et al.<br>Microbial Eukaryotes in Hypersaline Anoxic Deep Sea Basins; V.P. Edgcomb and W.D. Orsi<br>Life at High Salt and Low Oxygen: How Do the Halobacteriaceae Cope with Low Oxygen Concentrations in their Environment?; A. Oren<br>PART 8: SELECTED ORGANISMS<br>Niches and Adaptations of Polyextremotolerant Black Fungi; M. Grube et al.<br>Polyextremophilic Photoautotrophic Eukaryotic Algae; W. Reisser <br>Extremophilic Magnetotactic Bacteria; C.T. Lefèvre and D. A. Bazylinski<br>Multicellular Extremophiles – The Case of the Tardigrades; D. Schulze-Makuch and J. Seckbach<br>PART 9: FINAL COMMENTS<br>Polyextremophiles - Summary and Conclusions; J. Chela Flores<br>Erratum<br>Organism Index<br>Subject Index<br>Author Index</p>