The author explains climate history and climate science and makes this important subject matter accessible to a general audience. Chapter topics include examining the Earth’s geological past, the impact of climate on human evolution, the impact of climate on earlier civilizations, climate activism, and the need for international cooperation. Presenting climate history, human history, and climate science in a readable format and featuring resources for students, this book is meant for use by teachers in high school elective or an introductory college course setting.