Inge and Martin Goldstein, The Refigerator and the Universe: Understanding the Laws of Energy (Harvard University Press, 1991) Edward Cassey and Peter Z Grossmann, Introduction to Energy: Resources, Technology and Society (Cambridge University Press, 1993) John Vandermeer's chapters "Carbon Cycles and Energy Flows", "Resource Transformations in Homosapiens", " Energy and the Evolution of Hydrocarbon Society" in his Reconstructing Biology: Genetics and Ecology in the New World Order (John Wiley, 1996) best, rb