One of the great issues facing world in the 21st century is how to best obtain the energy for supporting operations

One of the great issues facing world in the 21st century is how to best obtain the energy for supporting operations: heat and light, transportation, production and delivery of goods and services. Fossil fuel supplies nearly 90 percent of the energy, according to the U.S. Department of Energy. In contrast, only %5 is provided by renewable energy. There are several differences between fossil fuel and renewable energy. Fossil fuel are including: oil, coal, natural gas and their derivative versus renewable energy types, such as solar, wind and geothermal, are naturally replenished in nature, so they can continue indecently. One of the