Biofuels (IMAGE) DOE/Lawrence Berkeley National Laboratory Caption Advanced biofuels have the potential to be clean-burning, carbon-neutral and renewable, but important social, economic and environmental issues must be addressed. Credit (Photo from EBI) Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.