Every grain of sand is a metxadroxadpolis for bacxadteria

View of a sand grain under a fluorescence microscope: The green spots are stained bacteria, which have mainly colonized depressions on the grain. MPIMM/CC-SA BY 4.0   Every grain of sand is a met­ro­polis for bac­teria A single sand grain harbours up to 100,000 microorganisms from thousands of species. Just ima­gine, you are sit­ting on ...