Written by an established climate change scientist, this book introduces readers to cutting-edge climate change science. Unlike many books on the topic that devote themselves to recent events, this volume provides a historical context and describes early research results as well as key modern scientific findings. It explains how the climate change issue has developed over many decades, how the science has progressed, how diplomacy has (so far) proven unable to find a means of limiting global emissions of heat-trapping substances, and how the forecast for future climate change has become more worrisome. A scientific or mathematical background is not necessary to read this book, which includes no equations, jargon, complex charts or graphs, or quantitative science at all. Anyone who can read a newspaper will understand this book. It is ideal for introductory courses on climate change, especially for non-science major students.