Algal biofuel is a renewable energy source made from algae, which are simple, photosynthetic organisms. These organisms can grow in various environments, including freshwater and saltwater, and can produce oils that can be converted into biodiesel or other fuels. Algal biofuels are considered sustainable because they do not compete with food crops for land and can utilize carbon dioxide from the atmosphere. The production of algal biofuel involves cultivating algae in large ponds or bioreactors, where they absorb sunlight and nutrients. This process can yield high amounts of oil compared to traditional crops, making it an attractive alternative to fossil fuels. Additionally, algal biofuel can help reduce greenhouse gas emissions, contributing to a cleaner environment.