Species from the Mucor and Rhizopus genera, part of the Mucorales group of filamentous fungi, can convert agricultural waste into biodiesel-rich oils. These fungi grow quickly, thrive on low-cost plant scraps like sugarcane bagasse and cheese whey, and can store over 40 percent of their body weight as oil. Researchers are now enhancing their oil output using tools like CRISPR and bioreactors, making them strong candidates for replacing fossil fuels in a circular economy.