Microplastics (IMAGE) University of Basel Caption A sample from the Rhine near Duisburg consisting of over 65% opaque spherules in 42-fold magnification; the spherules have a diameter of 400-900 micrometers. Credit (University of Basel, Thomas Mani) Usage Restrictions Give adequate attribution to the original author. 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.