Atomic force microscopy image of live E. coli showing the outer membrane is a network of outer membrane proteins. Phase separated, protein-poor but lipopolysaccharide-enriched islands can also be seen distributed within the protein network (image by Georgina Benn, University College London (UK), currently Princeton University (USA); based on a study published as Benn, G. et al. (2021), Proc. Natl. Acad. Sci. 118 (44). doi:10.1073/pnas.2112237118; image modified by MIC). The cover is published under the Creative Commons Attribution (CC BY) license.