Biodiesel is a renewable fuel made from natural oils, such as vegetable oil or animal fat. It can be used in diesel engines and is often blended with petroleum diesel to reduce emissions and improve sustainability. The production process typically involves a chemical reaction called transesterification, which converts the oils into fatty acid methyl esters (FAME), the chemical name for biodiesel. Using biodiesel can help decrease reliance on fossil fuels and lower greenhouse gas emissions. It is biodegradable and non-toxic, making it a more environmentally friendly option compared to traditional diesel. Additionally, biodiesel can be produced locally, supporting regional economies and reducing transportation costs.