Environmental Systems and Societies for the IB Diploma, 2nd edition, encourages students to grow their critical and reflective thinking skills and promotes the development of internationally minded thinkers. ESL speakers are supported throughout with a focus on vocabulary and straightforward, engaging explanation of topics appropriate for SL students. Real-world case studies bring theory to life and motivate students to delve into current global issues, building on skills of data interpretation, analysis and evaluation. Theory of Knowledge integrated into every topic with added discussion points to spark debate in class and develop critical and reflective thinking skills. More cross-referencing to highlight cross-curricular learning and connections with other topics. Additional support for teachers online offers help with planning lessons, differentiated support for all learner levels and guidance about the Internal Assessment, fieldwork, exam preparation and Extended Essay.