Jingjing Liang (IMAGE) Purdue University Caption Jingjing Liang, professor of qualitative forest ecology, in Purdue University’s high performance computing facility which was used to process data on more than 38 million trees worldwide. Liang is a professor in Purdue’s Department of Forestry and Natural Resources. Credit Purdue University Photo/Tom Campbell Usage Restrictions No restrictions. License Public Domain 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.