There are 54 billion bacterial cells on a single cubic centimeter of the average kitchen sponge. They are breeding grounds for all types of germs and bacteria. A common sponge’s spatial partitioning – the way it’s divided into different sectors of various sizes with a porous absorbent surface – caters to bacteria that prefer isolated environments and those that prefer to be around other organisms as well, making it the best of both worlds for microbial communities...