This document summarizes information about biodiesel, including its production process from vegetable oils and animal fats, its properties, applications as a fuel blended with petroleum diesel or used in pure form in certain engines, economic and environmental impacts, and global policies supporting biodiesel production and use. While biodiesel provides benefits like reduced greenhouse gas emissions and decreased dependence on oil imports, its production has also been linked to negative environmental consequences such as deforestation if crops are grown on cleared rainforest lands.