This incisive (cutting to the core) essay is from Darrin Qualman There are just two sources of energy  Excerpts below in italics with my bolds. Our petro-industrial civilization produces and consumes a seemingly diverse suite of energies: oil, coal, ethanol, hydroelectricity, gasoline, geothermal heat, hydrogen, solar power, propane, uranium, wind, wood, dung. At the most … Continue reading Only Two Energy Sources