In a growing bacterium, genes that run protein factories don't drift solo. They clump into liquid droplets, like oily smears in water — no membranes, but sharp boundaries. The NusA protein fuels this condensation. When it piles up, it glues neighboring DNA stretches together, forcing them into foci. Physicists call this phase separation: like salad dressing splitting into oil and vinegar. That order means a drop in entropy — chaos — inside the cell. Protein chains built on carbon backbones form enough bonds to hold the droplets. But here's the twist: these droplets are alive — they pulse, assembling and dissolving in seconds. This solves a long-standing paradox: genes far apart on a long DNA thread, in experiments, always sit next to each other — droplets yank them into a single blob. And now it's clear: the same mechanism runs in our own cells, from immune cells to neurons.