Heather E. Volk, Ph.D., M.P.H., University of Southern California (image) University of Southern California - Health Sciences Share Print E-Mail Caption Heather E. Volk, Ph.D., M.P.H., is assistant professor of research in preventive medicine and pediatrics at the Keck School of Medicine of USC and principal investigator at The Saban Research Institute of Children's Hospital Los Angeles. She is the first author of a study finding that exposure to air pollution appears to increase the risk for autism among people who carry a genetic disposition for the neurodevelopment disorder. Credit ©University of Southern California Usage Restrictions Image may only be used with appropriate caption and credit. Share Print E-Mail 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.