Timber (IMAGE) University of Gothenburg Caption Timber sold with false designation of origin is a global problem. By analysing isotope ratios and trace elements in the wood, researchers can deduce where the timber was harvested. Credit Johan Wingborg Usage Restrictions None License Original 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.