This volume sets out to summarize current knowledge of physical/structural adaptations of membranes to fluctuations of temperature. Temperature is one of the most potent perturbing influences on membranes and so it provides a useful model for analyzing how they respond to other stressful conditions. Genetic and molecular biology approaches to investigating the underlying machinery are presented in the book. Also included are new perspectives on mechanisms of cold and heat damage and on adaptations which endow enhanced thermoresistance.