Global warming, climate change, and greenhouse gas emissions have received extensive media coverage in the past few years. Governments and the public are grappling with calls "to do something". Some world leaders and prominent writers even say the future of humanity is at stake. People everywhere are trying to learn what the issues are all about. this publication takes on the challenge of summarizing this complex and evolving subject matter into one publication.

Understanding Climate Change aims to provide a comprehensive but easily readable summary of the current state of climate change science. It provides an overview of the many knowns and unknowns that pertain to climate change.