In a first for plasma physics, a stable room-temperature topologically confined plasma has been created without the need for external electromagnetic fields. Morteza Gharib of Caltech and colleagues fired a high-speed 100 micron jet of deionised water onto a polished quartz wafer. This, they found, creates a stable coherent toroid of glowing plasma for speeds of the water jet above 200 ms–1. The mechanism appears to be tribo-electricification caused by the large hydrodynamic shear.