Found via Paul Kedrosky.
Energy transitions: future without fossil energies is desirable, and it is eventually inevitable, but the road from today's overwhelmingly fossil-fueled civilization to a new global energy system based on efficient conversions of renewable flows will be neither fast nor cheap.
Vaclav Smil is Distinguished Professor at the University of Manitoba and the author of over 30 books, most recently Prime Movers of Globalization: The History and Impact of Diesel Engines and Gas Turbines. His interdisciplinary research encompasses energy, environment, food, population, economics, history and public policy studies. He is a Fellow of the Royal Society of Canada, and has lectured widely in North America, Europe and Asia.