Sustainability refers to something that is used and can be replenished in time for reuse. The United States is known for being innovative and moving forward in its development. What keeps the United States mobile and moving? We use fuel, more precisely gasoline. The United States has become more environmentally aware and has discovered that gasoline is a valuable resource and is not unlimited. Many people are afraid to change fuel because they have become accustomed to gasoline. One way for the United States to become more sustainable is to solve its fuel source problem. Oil is used in everything from cars to airplanes, boats, and machines of various types. Gasoline is not sustainable. There is a limited amount of oil or natural gas in the world, and it takes a long time for natural gas or oil to form in nature. An alternative to gasoline is ethanol. Ethanol is a biofuel made from corn. Currently, there are several gas stations that provide gasoline containing ethanol, usually around ten or fifteen percent. “A blend of 10% ethanol and 90% gasoline, or E10, is approved for use in every vehicle sold in the United States; about a third of American gasoline contains ethanol. (Coalition for the Energy Future 25-26). Although many are reluctant to switch from gasoline to a more sustainable fuel, such as ethanol, this change would reduce our dependence on other countries for oil, provide two tax benefits, and help the environment . One of the reasons gasoline use in the United States is unsustainable is because we currently depend on other countries for almost half of the oil we use. About forty percent of our oil and gas is imported from outside the United States. Although at present we are able to supply paper, we will be able to handle the corrosiveness of ethanol and no engine damage will occur. The cold weather volatility problem can be easily solved by adding a small amount of gasoline to the mixture. For the United States to be a more sustainable country, we must have a sustainable fuel source so we can keep moving forward. Works Cited “How much did the United States spend on imported oil in 2012?” » Green Lifestyle Changes, 2013.Web. April 29, 2014. “Ethanol Facts: Environment.” Renewable Fuels Association.2014. Internet. April 29, 2014. “How much natural gas does the United States have and how long will it last?” » Independent statistics and analysis from the US Energy Information Administration. 2012.Web. April 29, 2014Ed Wallace. “The Great Ethanol Scam.” Bloomberg Business Week. 2009. Internet. May 5, 2014 “The facts about biofuels: ethanol. » Coalition for the Energy Future. 2007. Internet. Can 6, 2014