David Yager, author, energy policy analyst and executive, has just published a book on Alberta's energy sector. "From Miracle to Menace: Alberta, a Carbon Story" explores the recent degeneration of the oil industry. While politicians used to argue that oil was too scarce and expensive, Yager says today it's common to hear politicians say oil is too cheap and used too extensively. Yager's book explores and analyzes the history of the oil sector and its public perception, stretching from the Leduc oil strike in 1947 up until today. Yager joins John now to discuss his book.