The objective of this book is to present the latest state-of-the-art theories, methodologies and applications of GAs. It deals with the theoretical and methodological aspects, as well as various applications in a variety of disciplines. GAs are applied to real world problems from science, technology, biology, chemistry, social sciences, business and commerce. This book comprises of several chapters including theories and applications giving the fundamentals and many important research challenges in this field of study. This book has been designed to be beneficial to most practicing scientists and engineers interested in this area.