e three types of fossil fuel coal, oil and natural gas.
             90% of the energy we use in this country comes from fossil fuels. Aside from the environmental impacts of exploration and extraction of fossil fuels, their use causes such things as smog, acid rain, and contributes to global warming. Furthermore, the world's supply of fossil fuels is not limitless. Coal, oil, and natural gas heat our homes, power our cars, generate electricity, and basically run America's industries. As we begin to rely on these sources more and more, their abundance becomes less and less. What is important to realise is that these fuels are in very short supply, with coal expected to last for up to 150 years, oil for 50 years and gas for 25 years.
             Industrialized countries such as the United States rely heavily on the burning of non-renewable fuels in order to provide energy. Non- renewable supplies are like life-saving once they are gone they can never be replaced so are the opposite to renewable energy sources. Burning of such fuels can cause air pollution problems.
             Tracking Carbon Dioxide Emissions from Fossil Fuel Burning The largest single source of atmospheric carbon dioxide (CO2) is the burning of fossil fuel (coal, oil and gas), which currently accounts for ~80% of the annual emission of carbon dioxide into the atmosphere. Nitrogen is also a byproduct of fossil fuel use.
             Finding new reserves often means exploring and tapping such environmentally sensitive areas such as the Artic National Wildlife Refuge. This becomes extremely costly, and some argue, draws attention as well as funds away from finding alternative sources.
             The alternatives are, mostly, the renewables. Although conservation and nuclear energy are also thought of as fossil fuel substitutes, it is sun power, wind power, and water power that gets support from the environmentally conscious.
             Hydroelectricity accounts for nearly 4% of the U.S. energy, with solar and wind power making ...