Another good book by Vaclav Smil: A collection of essays about all the forms of energy - ALL the forms - in our world.
Here's the publisher's description of the book:
In this highly original book, ecologist Vaclav Smil presents a comprehensive and integrated survey of all the forms of energy that shape our world, from the sun to the human body, from bread to microchips. Written in a scientifically sophisticated yet accessible style, Energies consists of eighty-two short essays organized under six headings: Sun and Earth, Plants and Animals, People and Food, Preindustrial Societies, Fossil-Fueled Civilization, and Transportation and Information. Each essay explains the science of the energy form as well as its implications for the functioning of the universe, life, or human society.