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Energy is a force of nature represented in modern science as electrons, positrons and neurons.

Energy Sources

This section in particular, focuses on so-called "dirty energy", "old-world economy" and/or "non-renewable" energy sources.


A biofuel is a fuel that contains energy from geologically recent carbon fixation. These fuels are produced from living organisms. Examples of this carbon fixation occur in plants and microalgae. These fuels are made by a biomass conversion (biomass refers to recently living organisms, most often referring to plants or plant-derived materials). This biomass can be converted to convenient energy containing substances in three different ways: thermal conversion, chemical conversion, and biochemical conversion. This biomass conversion can result in fuel in solid, liquid, or gas form.


The original "biofuel", burning wood (think furnaces and campfires) has kept people warm in cold climates and seasons since the dawn of man.


Coal is a combustible black or brownish-black sedimentary rock usually occurring in rock strata in layers or veins called coal beds or coal seams. It generates heat/potential energy when it is combusted, which is used for instance to heat water in the powering of steam engines. When coal is used for electricity generation, it is usually pulverized and then combusted (burned) in a furnace with a boiler. The furnace heat converts boiler water to steam, which is then used to spin turbines which turn generators and create electricity. The thermodynamic efficiency of this process has been improved significantly over time, but there are still substantial envrionmental impacts (see: wikipedia: Environmental impact of the coal industry).


Crude oil comes in many forms. Usually it is black, but green, red or brown oils are not uncommon. Most oils are mixtures of many different compounds, most of which are hydrocarbons (varying from bitumen to algae to ancient tree resin to one-celled plants and animals called plankton).[1]


Bitumen-based fuel is fuel specifically developed for industrial use. The most known bitumen-based fuel is Orimulsion, an emulsion of natural bitumen which is a sticky, black and highly viscous liquid or semi-solid form of petroleum. It may be found in natural deposits or may be a refined product.


Nuclear Energy is the use of exothermic nuclear processes (i.e. nuclear fission, nuclear decay and nuclear fusion), to generate useful heat and electricity.





External Links


  1. What is Oil?:
  2. Understanding EMF (by PG&E):
  3. PG&E issues EMF warning increase your distance:
  4. NBPower -- Data Visualization - Total outages this year:

See Also

Renewable Energy | Wind Energy | Solar Energy | Hydro-Electric Energy | Tidal Energy | Geo-Thermal