This book provides a broad perspective on recent developments and future possibilities in surfactant science and technology. It contains chapters by leaders in surfactant-based physical, organic, and materials chemistries, including many who participated in a special symposium honoring Kash Mittal's 100th edited book at the 18th Surfactants in Solution meeting in Melbourne, Australia. Each chapter provides an overview of a specific research area, including past, present, and future directions. Both theory and applications are covered, including micellization and ion binding theories, biosurfactants, liquid formulations, drug delivery, and enhanced oil recovery.