Figure 2 (IMAGE) Tohoku University Caption The upward transport of the cuboidal intruder through bubble-induced granular effects. The scale is 1 cm. Credit Srivastava et al. Usage Restrictions Reporters may use freely these materials in news coverage with appropriate credit information. 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.