Fossil fuel, including coal, oil and natural gas, is the primary source of energy. However, the resources are quickly becoming depleted due to over consumption. Moreover, the combustion of fossil fuels has strengthened the greenhouse effect and caused global warming which consequently led to greater interest in shifting to alternative energy sources, such as solar power, wind, hydroelectric, geothermal, biofuel and nuclear power. All these alternative resources can help alleviating the impact of environmental degradation, and most of them are renewable, nevertheless, capturing these resources is more expensive. Connect to MMIS to find out more.