Richard Heinberg is the author of The Party's Over, Power Down, and Peak Everything. I highly recommend all three books, but I would recommend reading the author's first book to start, as it goes over the theory of peak oil on a general level, whereas his other books are more specific and philosophical in nature.
Personally, reading these books awakened me to a whole new way of thinking, and had a profound effect on my long-term investment decisions. The information detailed in these books I think provide another pillar of support for the iron-clad bullish case for gold and silver, although this is not the author's intentions.
Please enjoy the above YouTube video.