Greenhouse gas emissions have reached an all-time high despite the severe consequences of unmitigated global warming. Although the accelerated uptake of clean energy technologies is helping to bend the global emission curve downward, achieving international climate targets requires ambitious policies. The cost of reducing emissions is significantly lower than the projected cost of unabated global warming, yet climate policies still face political obstacles. This book provides a concise account of climate policy from an economic perspective – why it's needed, the costs and benefits of different actions, and how the global economy needs to be transformed to achieve climate targets. It discusses the pros and cons of approaches being adopted in countries around the world, and examines concrete policies for climate change mitigation and adaptation. Making state-of-the-art scientific evidence accessible for non-specialist readers, this fascinating book will appeal to anyone with an interest in climate policy, including students taking introductory climate courses.