Natural gas is a fossil fuel composed mainly of methane, a simple hydrocarbon. It is found deep beneath the Earth's surface, often in association with petroleum or in shale deposits. As a cleaner-burning alternative to other fossil fuels, natural gas is widely used for heating, electricity generation, and as a fuel for vehicles. The extraction and use of natural gas have significant implications for the environment and economy. While it produces fewer greenhouse gases compared to coal and oil, concerns about methane leaks during extraction and transportation remain. Overall, natural gas plays a crucial role in the global energy landscape.