Brings together a wide range of new writings from leading experts that examine the many dimensions of the topics most important in understanding climate change and policies to combat it. Chapters consider: climate science in historical perspective; analysis of uncertainties in climate science and policy; the economics of climate policyl; North-South and intergenerational equity issues; the role of business and industry in climate solutions; and policy mechanisms including joint implementation, emissions trading, and the so-called clean development mechanism.