Climate change is an important existential issue for our time. This book is an anthology of readings about climate change science. The rationale for writing this book is that some universities are now beginning to require all undergraduate students to take an approved climate change course. The book is for students who may lack strong mathematical backgrounds or may not have taken some science courses. It also for the general reader who wants to understand climate change science. The book has no equations and no technical jargon and no complex charts or graphs. Anyone who can read a newspaper can read this book. The book explains how the climate change issue has developed over many decades, how the science has progressed, how diplomacy has proven unable to find a means of limiting global emissions of heat-trapping substances such as carbon dioxide created by burning fossil fuels (coal, oil, and natural gas), and how the forecast of the resulting climate change has become more worrisome.