FDCA (IMAGE) University of Wisconsin-Madison Caption This is a crystal of furandicarboxylic acid, or FDCA, a plastic precursor created with biomass instead of petroleum. Credit UW-Madison image by Ali Hussain Motagamwala and James Runde Usage Restrictions Credit: UW-Madison image by Ali Hussain Motagamwala and James Runde 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.