Bacterial growth (IMAGE) Princeton University, Engineering School Caption Researchers discovered bacteria colonies grow in rough shapes, much like crystals, in three dimensions. Photo illustration by Neil Adelantar, Princeton University Credit Princeton University Usage Restrictions noncommercial use 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.