Jonathan Richardson, Providence College (IMAGE) U.S. National Science Foundation Caption Jonathan Richardson of Providence College studies the factors that effect rat populations in cityscapes, work that could lead to more effective rat population control efforts and public health campaigns. Credit Jonathan Richardson 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.