...alternative energy sources are not going to save our collective asses. We're looking down the barrel of a howitzer, and the guy on the other end has a itchy trigger finger. Our agricultural "miracle" is dependent on cheap oil, our economy is based on cheap oil, the global market is based on cheap oil - and when that runs out, there's pretty much nothing we can do about it. Even the biomass processors depend on oil-based agriculture to provide enough waste input to recover some of the energy that is used in producing the main product.
It's one hell of a depressing book.