Kevin E. Trenberth emphasizes the fundamental role of energy flows in the climate system and anthropogenic climate change. The book covers diurnal and seasonal cycles, contrasts between continents and oceans, interannual variability such as Niño, natural decadal variability, ice ages, and how human-induced climate change interacts with these processes. It explains physical concepts with accessible prose and color illustrations to inform students, researchers, and professionals about climate change and resilience.