As our knowledge and experience of the immense social, environmental and economic crises worldwide continues to grow, we are beginning to recognise the gulf between what needs to be done in order to protect life on our planet, and what is currently being done by the environmental movement. Despite massive steps forward, often against huge odds, the authors of this report argue that the main strategies pursued by environmental campaigners are not enough to truly achieve systemic and durable change. Tom Crompton, founder of Common Cause, and the internationally renowned social psychologist, Tim Kasser, examine particular aspects of human identity and how they are associated with environmental problems, before identifying strategies to mitigate the extent to which these aspects are encouraged in our culture, and how alternative aspects of our nature could be promoted and celebrated.