The novel photosynthetic biocomposite material is a 3D-printed structure made of a seaweed-based polymer combined with genetically engineered cyanobacteria to produce an enzyme that transforms various organic pollutants into benign molecules. The bacteria were also engineered to self-destruct in the presence of a molecule called theophylline, which is often found in tea and chocolate. Datta et al. developed a ‘living material’ that could offer...