This is http://www.essayz.com/b0802211.htm Previous-Essay <== This-Essay ==> Following-Essay Click HERE on this line to find essays via Your-Key-Words. {Most frequent wordstarts of each essay will be put here.} ========================================================== Click on WELCOME for a quick tour of essayz.com ========================================================== %ULTIMATELY SUSTAINABLE PER CAPITA ENERGY USE EVER 080221 %MAINTAINED GLOBALLY HUMAN CIVILIZATIONS LIMITS GOD 080221 %SPACE SHIP EARTH ORBITING SUN WITHIN MILKY WAY SIN 080221 %FINITE EXPANDING COSMOS FIVE BILLION YEARS OLD NOW 080221 The below is intended to provoke thinking and dialogue! Ultimately humanity will have to ask and answer every one of the following Troubling-Questions: 1. How much LIQUID-FUELS remain hidden IN the solid crust of the earth --- which can be extracted with a Net- Energy-Gain? At what costs? 2. How much SOLID-FUELS remain hidden IN the solid crust of the earth --- which can be extracted with a Net-Energy- Gain? At what costs? 3. How much ALIVE-BIO-MASS remains IN open spaces on the solid crust of the earth --- which can be harvested as a source of Hydrocarbon-Dry-Fuels? At what costs? 4. How much ALIVE-BIO-MASS remains hidden IN the Oceans, Seas and Lakes --- which can be harvested as a source of Hydrocarbon-Dry-Fuels? At what costs? 5. How much DEAD-and-DECAYING BIO-MASS remains hidden ON the Solid-Crust of the Earth --- which can be harvested as a source of Hydrocarbon-Dry-Fuels? At what costs? 6. How much new BIO-MASS can be grown each year on the solid surface of the Earth? At what costs? 7. How much new BIO-MASS can be grown each year IN the liquid volumes of the Eaarth's: Oceans, Seas, Lakes and Rivers --- and so how much Solar-Energy can be harvested each year through that way of Capturing-Solar-Energy. At what costs? 8. How much SOLAR-ENERGY Can-be-Harvested each year by the use of Solar-Panels, Mirrors, Concentrators, and all other physically engineered physical devices placed on the surface of the earth. At what costs? 9. How much URANIUM-235, URANIUM-238, and Thorium can be extracted with Net-Energy-Gain from the Solid-Crust of the Earth. At what costs? 10. Can there ever be a net energy gain For-Peaceful-Uses of Thermo-Nuclear-Fusions of Light-Nuclei? At what costs? 11. How are the answers to the above questions affected by actual and reasonably expected: (a) Population- Growths, (b) Global-Warming, (c) Rising-Ocean-Waters, (d) Relocation-Costs, (d) Per-Capita-Energy-Consumption- per-year.? 12. In the light of all of the above --- what is the Net- Energy-Consumption-Rate Per-Person-Alive --- which can be SUSTAINED during the coming Ten-Thousand-Years? Be-Together in the Many-Gracious Ways of Shalom. (c) 2008 by Paul A. Smith in "Search for Honesty and Integrity" (On Being Yourself Whole and Healthy) ==========================================================