Wally Tyner, Purdue University (IMAGE) Purdue University Caption Wally Tyner says it will take advances in next-generation biofuels for the United States to meet federal Renewable Fuel Standard requirements. Credit Purdue Agricultural Communication photo/Tom Campbell 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.