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is a brief but comprehensive introduction to energy. Learn what energy is and how it is used. Explore renewable and nonrenewable energy -- oil, coal, gasoline, natural gas, nuclear, hydropower, biomass, biofuels, wind, geothermal, solar, and more. (U.S. Energy Information Administration, Department of Energy)
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The main ingredient in natural gas is methane, a gas (or compound) composed of one carbon atom and four hydrogen atoms. Millions of years ago, the remains of plants and animals (diatoms) decayed and built up in thick layers. |
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Renewable energy |
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