The story of our Earth is one of constant change. Only by understanding why the Earth has changed in the past is it possible to predict how it will change in the future. Four years ago I considered the theory of global warming to be a real possibility, but I found that I could not wholly commit to it without understanding the science of the Earth's climate. With my background as an engineer in the private R&D field as my guide, I decided to understand the Earth's climate and the theory of global warming for myself. This book tells of my journey through the science and the controversy that surrounds the global warming debate. It tells the history of the Earth's past climate and how it became the climate of today. It is this knowledge that made me a global warming skeptic. This book is not for those that wish to ignore the science of the debate, it is for those that want to learn about why the Earth changes. Climate will change in the future, if you want to know why, then read this book.