Alternative fuels are energy sources that can replace traditional fossil fuels like gasoline and diesel. These fuels are often derived from renewable resources, such as biofuels made from plants, hydrogen produced through various methods, and electricity generated from renewable sources like solar and wind. Using alternative fuels can help reduce greenhouse gas emissions and dependence on oil, contributing to a cleaner environment. Many vehicles are now designed to run on alternative fuels, including flex-fuel vehicles that can use a mix of gasoline and ethanol, and electric vehicles that rely solely on electricity. The adoption of these fuels is supported by government incentives and advancements in technology, making them more accessible and efficient for consumers and businesses alike.