Kenneth Deffeyes has an engaging entertaining syle and is a gifted teacher. A professor emeritus of geology at Princeton, he was born to an oil family in Oklahoma and worked at Shell during the glory days of M. King Hubbert. This is an oil man, and a top level academic thinker.
I earnestly recommend that you read this book if you are interested in energy issues. If you complete the book and understand the details (no small task in some of the chapters), you will have a high level of understanding of the salient details of oil and natural gas exploration, recovery and refining. You will know why major deep ocean oil deposits are extremely unlikely. You will know what a source rock is, and how it must be positioned at the appropriate depth range in the earth to make oil; drilling deeper is not going to help us. In short, you will feel like you have completed a postgraduate course in petroleum geology. For $12 for the paperback version, it's quite a deal.
The book deals in hard facts; it has no discernable ideological bent. But is does makes a compelling case that global oil production will peak sometime between 2003 and 2009, and that society will be in for a resulting shock. If you are a doubter, take my challenge and read this book.