Tony Wolf, Virginia Tech (IMAGE) Virginia Tech Caption Tony Wolf, Virginia Tech professor of viticulture, measures sunlight interception at the level of the grape cluster to quantify fruit cluster exposure. He heads a project to improve grape and wine quality in the eastern United States. Credit Virginia Tech Photo Usage Restrictions This photo may be used with any coverage of viticulture research by Virginia Tech. 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.