Erin Cameron, University of Alberta (IMAGE) Ohio State University Caption Biologist Erin Cameron of the University of Alberta in the field. Biologists are working with Oksana Chkrebtii, assistant professor of statistics at the Ohio State University, to map the spread of invasive worm species in Alberta. Credit Photo courtesy of Erin Cameron, University of Alberta 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.