Smithwick (IMAGE) Penn State Caption Erica Smithwick, professor of geography and director of the Center for Landscape Dynamics at Penn State, measures trees to quantify carbon stocks in the Dwesa-Cwebe nature reserve in Eastern Cape Province, South Africa. Credit Smithwick Lab, 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.