solar farm (IMAGE) Penn State Caption The researchers conducted a year-long field investigation of soil moisture patterns, solar radiation and vegetation at two solar farms in central Pennsylvania — built on slopes representative of the Northeast U.S. Credit Penn State Usage Restrictions Credit must be given to the creator. Only noncommercial uses of the work are permitted. No derivatives or adaptations of the work are permitted. License CC BY-NC-ND 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.