Book excerpt: Given the potential disruption of climate change, understanding energy issues and technologies is more important than ever if societies are to make informed choices on policy. Now in its third edition, Introduction to Energy explores the crucial issues connected to modern energy technology and its uses. Fully updated to respond to the substantial developments in the energy sector, the book expands on the relationships of energy use and climate change; of energy availability and the alleviation of world poverty; and of energy consumption and the sustainability of the lifestyles of people in the industrialized world. Directed at a broad readership, it assumes no prior technical expertise and avoids complex mathematical formulations, continuing to provide a standard for introductory energy courses. It is also a useful supplementary text for programs in public policy, business law and resource economics.