Nowadays, many people are talking about renewable sources of energy like so far, wind, and water power. They insist that renewable energy sources will replace fossil fuels in the near future. However, I disagree with these people. In my opinion, humans are going to be using fossil fuels to create energy for many years to come.

　　First of all, according to many scientists, there is still an enormous supply of fossil fuels on Earth. Many geologists estimate that Earth has gas and oil supplies of over 100 years. The coal supply is even higher. Also, teams of geologists are often announcing they have found new oil and gas fields alt over Earth, especially because they can now dig deeper into the ground to extract these fossil fuels. Since there are still so many fossil fuels left on Earth, it is highly unlikely that people are suddenly going to change to renewable sources of energy. For one, people do not often change until they are forced to do so. In addition, machines like cars are becoming more fuel-efficient, and this development will actually help make the supply of fossil fuels last longer because machines are using less energy to operate. Simply put, until people are forced to change energy supplies, they are not going to.

　　Next, renewable sources of energy are still in their developmental stage. Some people use solar, wind, and water power, yet the number doing so is very small. Also, these renewable sources of energy are not yet very efficient. This means that they actually cost more than fossil fuels while providing less energy. Not only that, but their uses are also often limited. For example, people cannot use so far power if the weather is bad; people who do not live near a body of water cannot use water power; and people who live in areas with little wind cannot make use of wind power. Until researchers discover ways to make renewable energy more efficient and more ubiquitous, people are not going to start using it in place of fossil fuels.

　　Although many people are attracted to renewable sources of energy, I do not believe they are going to become the dominant form of energy and replace fossil fuels. People see no reason to replace fossil fuels, and the technology to create energy from renewable sources is currently not efficient enough.