Pesticide concentration map (IMAGE) University of Sydney Caption Pesticide concentration in rivers and discharge to oceans globally Credit Associate Professor Federico Maggi, Dr Francesco Tabiella, Dr Fiona Tang. Usage Restrictions For use with this story only License Original 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.