Buckminsterfullerene Perspective 3D Balls (image) Springer Share Print E-Mail Caption Impacting positrons release positronium from C60. Credit Benjah-bmm27, public domain. Usage Restrictions None 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.