Book excerpt: The evidence is increasingly persuasive. We are changing the way our planet's physical systems work—irrevocably. These changes are global and interconnected and unavoidable. They are upon us already, making it virtually impossible for any modern society to continue its present trajectory of growth. This book provides a penetrating analysis of how we have come to this point, of why science and technology will fail to solve these problems, and of how we as a society must change in order to avoid ecological catastrophe. The scope is broad, the urgency of the message is impossible to ignore.