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What You Need To Know About Energy. Our Energy Sources. Fossil Fuels. The United States gets 81% of its total energy from oil, coal, and natural gas, all of which are fossil fuels. We depend on those fuels to heat our homes, run our vehicles, power industry and manufacturing, and provide us with electricity.
Producing about 23 percent of the world's energy needs, coal is now sold cheaply. However, the impact of this fossil fuel on our health and our atmosphere is one dirty, expensive proposition. Coal emits more carbon per unit of energy than oil, and 80 percent more than natural gas.