Gloved hands digging in soil (IMAGE) Penn State Caption Initial findings from a soil testing project launched a year ago in Philadelphia indicate positive news for urban growers — low levels of contaminants and the potential to save money on compost. Credit Courtesy of John Byrnes 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.