Liquid gallium in a Petri dish (IMAGE) University of Sydney Caption Liquid gallium in a Petri dish at the University of Sydney's School of Chemical and Biomolecular Engineering Credit Philip Ritchie/University of Sydney 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.