Glowing Microbes in Green Spheres (IMAGE) Duke University Caption These different species of bacteria — each engineered to glow a different color so researchers can track their growth — are thriving in harmony with one another thanks to their structured environment. Credit Andrea Weiss, Zach Holmes and Yuanchi Ha, Duke University Usage Restrictions None 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.