Cracking crystals (IMAGE) University of Tokyo Caption An image from a scanning electron microscope of Metachert aggregate, a concrete analogue, before exposure to neutron radiation (left) and after (right). Credit ©2025 Maruyama et al. CC-BY-ND Usage Restrictions Credit must be given to the creator. No derivatives or adaptations of the work are permitted. License CC BY-ND 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.