Bart Johnson on the Study's Impact (AUDIO) University of Oregon Your browser does not support the audio element. Caption Bart Johnson, a professor of landscape architecture at the University of Oregon, discusses the overall implications of the pilot study that was led by his doctoral student Gwynne Mhuireach. Credit University of Oregon 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.