Professor James R. Flynn is author of 16 books and well known in Psychology (because of the ‘Flynn Effect’ – massive IQ gains from one generation to another) and Philosophy (recipient of the Royal Society of New Zealand’s Humanities Aronui Medal). He has been profiled in Scientific American and received the Otago Gold Medal for distinguished career research. Recently he realised that he had no educated opinion about the chief moral and psychological problem of our time, global warming, and felt disadvantaged – hence this book.