 Shonella-Woney-Densis is a bacterium that can be used as a model organism for studying microbial electrochemical systems, MES. In this study, researchers developed a synthetic biology approach to improve the performance of S. Woney-Densis by engineering its biofilm structure. The engineered biofilm was found to have a significantly higher output power density compared to the wild type strain, demonstrating the potential of this approach for improving the performance of MES. This article was authored by Fong Li, Rui Tang, Bao Kai Zhang, and others.