Shahidi Shirin, Penn State (IMAGE) Penn State Caption Researcher Shahidi Shirin, a graduate student in the Department of Ecosystem Science and Management, Penn State, when the study was done, pauses before a pile of wood used for pallets. Forty percent of all hardwood harvested in this country goes into pallet production, researchers say. Credit Penn State Usage Restrictions Non commercial use only 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.