The Earth's temperature has been rising. To limit catastrophic outcomes, we must limit warming to no more than two degrees Celsius (3.6 degrees Fahrenheit) average temperature rise. Economists agree we will save trillions of dollars by acting early. But how do we act successfully? What is the plan if we fall short? Bridging climate science, design, psychology, politics and religion, we explore the practical steps to reduce global warming and to adapt to the inevitable, all the while improving the bottom line, beautifying our communities and increasing human health for all of us who occupy and shape our environment.