Ziter 5 (IMAGE) University of Wisconsin-Madison Caption Carly Ziter collects soil samples from the backyard of a study participant in Madison, WI, to determine the benefits provided by different types of urban green space. Credit (Photo: Lauren Jensen) Usage Restrictions None 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.