Can you save the planet and have some fun along the way? Aimed at the teacher who updates students on the latest climate change negotiations, the conservationist who works to protect endangered species, the office manager who buys fair-trade coffee or the city councillor who lobbies for cycle lanes, this book is a guide for everyone who is trying to create a more sustainable planet. Psychology for a Better World explains how we can get others to join us. Based on the latest psychological research, Niki Harr shows which strategies work (drawing on positive emotions, role modelling and social identity), which don't, and why. The book ends with a self-help guide for sustainability advocates that outlines how we can work for change at the personal, group and civic level. This edition is fully revised and updated with new material on hope, sadness, worldview and climate change, behavioural contagion, moral foundations and more. The book is now accompanied by a free online manual with exercises to illustrate the key concepts and apply them to real world sustainability issues.