Paleoclimatology courses are growing, attracting a wide variety of students in earth and environmental sciences, geography, ecology, and related fields.  Earth's Climate: Past and Future works as either a nonmajors introduction to Earth system science or climate change, or as a majors/graduate-level overview of the processes and techniques in climate science.  Written from a multidisciplinary perspective by one of the field's preeminent researcher/instructors, the text summarizes the major lessons to be learned from 550 million years of climate changes, as a way of evaluating the climatological impact on and by humans in this century.  The book also looks ahead to possible effects during the next several centuries of fossil fuel use.