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Fossil Fuels What is it? Fossil fuels are made from the compressed remains of ancient plants and animals (called fossils). Most internal combustion engines that power everything from jet planes to automobiles and railroad locomotives run on fossil fuels. Give me an example! Fossil fuels include peat, coal, gasoline, heating oil, methane (natural gas), diesel fuel, and kerosene. Fossil fuels are not a renewable resource, which means that once they are consumed, they are gone forever. Copyright ©2010, PCS Edventures, Inc. All Rights Reserved.