Sample Sourdough Starter (IMAGE) Massachusetts Institute of Technology Caption A sample of sourdough starter from The Herman Project. MIT researchers are studying the samples from participants to see how microbial these communities change in different conditions and environments. Credit Allison Dougherty/MIT Department of Civil and Environmental Engineering Usage Restrictions Images 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 Licensed 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.