The history of energy usage and all the major sources of power are explained in a clear and precise manner. The need to move away from fossil fuels towards renewable sources is also clearly stated. Sadly, though it has been more than a decade since publication, the U.S. has still not moved much in the direction of renewable sources. There has been much talk and some research, but little funding and actual implementation. This book has not become outdated because we have not moved forward.
RL=5th-8th