Biologists from the University of California San Diego have discovered that collectives of bacteria, or “biofilms feature a robust capacity for memory. Researchers observed that bacterial cells stimulated with light remembered the exposure hours after the primary stimulus. The researchers were able to handle the process so that memory models developed. The result unveils remarkable similarities between low-level single-cell organisms and sophisticated neurons that process memory in the human brain. This finding in bacteria gives signs and an opportunity to understand some important characteristics of the brain more simply.