For as long as humans have existed, they have been interested in one thing: energy. Energy and its use have been a big question mark for humans throughout history. Additionally, whenever humans find a source of energy, they are never satisfied. The human race has always tried to find newer and more efficient energetic ways to show its dominance. For hundreds of years, humans have fallen in love with fossil fuels. These different types of energy are very effective in meeting all the needs that humans might have. There are some drawbacks that have come to light that have caused us as a human race to seek new energetic pathways. But these new energy sources cannot only be new, they cannot only be cheaper than fossil fuels, but they must also be more efficient and cleaner for the environment. This limits what could actually be the new and improved energy source that the human race turns to, because if it were easy to understand and use, it would have already been done. Technological improvements, however, have opened the way to a new type of energy, although it is beginning to spread rapidly; this new energy is renewable energy. This type of energy will never run out and is better for the environment because it uses natural elements and simply draws energy from them. Solar, wind, and hydroelectric power are three main types of renewable energy sources that have begun to lead the way in this movement of change. The only question is whether they are actually cheaper, more efficient and easier to use. The first example of a renewable energy source is solar energy. This type of energy comes from the abundant energy of the sun. How solar power works involves using solar panels or solar cells to create and convert solar energy into mechanical energy, ...... middle of paper ......c Power. " Energy Facts: Hydroelectric Power. Ohio State University, nd Web. November 30, 2013. Department of Energy and Climate Change. “Electricity Generation Costs.” Department of Energy and Climate Change, October 2012. Web, December 1, 2013. “FAQ – National Size Watch. National Wind Watch, nd December 1, 2013. “Environmental Impacts of Wind Power,” Union of Concerned Scientists, March 5, 2013. of Concerned Scientists. “How Solar Energy Works,” Union of Concerned Scientists, December 16, 2009. Web, November 30, 2013. U.S. Department of Energy, October 10, 2013. Web. environment. “Hydroelectricity”, EPA, September 25, 2013. Web.. 2013.