This comprehensive new book, available as both print and e-book, has been written by the highly experienced author, Ellie Tragakes, and has been designed for class use and independent study. The text includes in-depth analysis of all topics included in the IB syllabus at both Standard and Higher Levels. It uses accessible language with storytelling for students to follow, and efficiently presents and analyses topics to optimise learning. The provision of questions throughout each chapter is intended to provoke discussion and test students' understanding. There are also comprehensive end-of-chapter questions. The print book includes an accompanying CD-ROM that provides model answers to select review questions and case studies with exam-style data-response questions, answers and evaluation. These resources have been developed in association with the teaching community. These e-learning materials are also included on the e-book version for an all-in-one solution.