Our world runs on massive amounts of energy  each day. We use energy to power important utilities, such as providing  electricity to our houses, fuelling our cars and vehicles, and allowing us to  cook tasty meals properly with sufficient heat. 
                               The modern world uses several energy source types to meet the demands of a growing  population. Energy can be extracted from many places, and energy sources are  primarily divided into two categories – renewable and non-renewable energy. 
                               Non-renewable energy can come in the form  of coal, petroleum, underground deposits of natural gas, and other types of  fossil fuels. These sources are rich in carbon and come from the remains of  deceased organisms that have slowly transformed into fuel by the high heat and  pressures beneath the Earth for hundreds of millions of years.
                               The term ‘non-renewable’ stems from the  fact that the Earth possesses a finite amount of these resources. In the  future, our supply of fossil fuels may be exhausted forever; as of now,  however, there is still plenty to go around. As of the present day,  non-renewable materials continue to be the most popular form of energy source.
                               It doesn’t cost much to extract resources  like coal, methane and petroleum, which helps save money in obtaining and  processing it for energy. However, the burning of these materials also releases  pollutants such as carbon dioxide, sulfur, and nitrogen oxides. When these  pollutants are present in the soil, water or air, they can cause a variety of  diseases and other harmful conditions and disturb the natural ecosystem.
                               On the other hand, renewable energy sources  can be obtained through naturally-occurring phenomena, such as sunlight, wind,  running water, and the Earth’s own volcanic activity. It can also encompass  resources such as biomass, or the organic waste from farming and other  industries, which can easily be replenished.
                               Due to the potential hazards that  combusting fossil fuel can bring to the environment, people support renewable  energy as a safer and more sustainable alternative. 
                               Solar energy is currently the most  prominent type of renewable energy. It harnesses sunlight into electricity  through the photovoltaic cells in its panels. Several panels can power a home,  and miniature panels are regularly used for consumer appliances today.
                               Windmills – or wind turbine generators -  produce energy when the movement of the air turns its large turbines. A single  turbine can generate enough electricity for roughly 500 households per month.  Tens to hundreds of these turbines compose a wind farm and often power multiple  cities. 
                               Hydroelectric power plants convert  mechanical energy from moving water into electricity. The most important  component of these plants are dams – barriers through which large quantities of  water flow.
                               One of the more fascinating types of  renewable resources is geothermal energy. The Earth constantly churns rock,  magma, and other materials beneath the surface, releasing massive amounts of  heat. This heat can be easily accessed in hotspots such as volcanoes and hot  springs. Geothermal plants use this heat to quickly turn water into steam,  which is then used to power steam engines.