The world may be ready for net-zero emissions. Global greenhouse gas emissions are still rising, and yet many countries have passed peak emissions, as zero-carbon technologies are taking over many sectors and becoming available in others. This book explains the recent developments that underly the positive trends, and why these represent a major shift in ideas about how climate policy operates. It examines historical factors once leading to dramatic growth in emissions, and how the technologies and behaviours responsible for emissions can now be replaced with clean alternatives, promoting human well-being and being politically feasible. The authors discuss arguments for and against modern climate policy, why previously dominant ideas did not work as expected, and identify priority policy solutions for the next decade. This book will help students, inform policymakers and practitioners, and educate the general reader, allowing them to make better choices on climate and policy going forward.