Margaret Greenway, Griffith University (IMAGE) Griffith University Caption School of Engineering Professor Margaret Greenway has found Melaleuca leaves preserved in ancient wetlands could be used to reconstruct past rainfall activity. Credit Griffith University 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.