Grain Flow (IMAGE) Massachusetts Institute of Technology Caption An MIT team has developed a more accurate formula to calculate how much sediment a fluid can push across a granular bed, which could help engineers manage river restoration and coastal erosion. The key to the new formula comes down to the shape of the sediment grains. Credit Image courtesy of Eric Deal, Santiago Benavides, Qiong Zhang, Ken Kamrin, and Taylor Perron, et al Usage Restrictions Images are are made available to non-commercial entities, press and the general public under a Creative Commons Attribution Non-Commercial No Derivatives license. You may not alter the images provided, other than to crop them to size. A credit line must be used when reproducing images. 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.