Climate Change is a collection of a number of papers as well as chapters about the science of the subject. This collection is meant to inflame and excite conversation among engineers and scientists with society at large. It would serve as a catalyst for a three-credit course as a relatively new engineering subject to both engineering and non-engineering university students. As university education develops to better prepare future leaders to appreciate science, technology, engineering and mathematics, engineering courses for a mix of engineering and non-engineering majors, are essential and so is the requirement of worthy textbooks. This monograph intends to be one of the useful tools available for this timely topic. The wide range of topics includes climate change and theories, the second law of thermodynamics, the global greenhouse effect, anthropogenic heat release, evidence around us owing to environmental change, sea level rise, jungles and forests, heat islands, atmospheric carbon dioxide removal via technology, nanotechnology and other innovations in response to climate change, the energy–water–food nexus.