“…Ball lightning has been the subject of a great deal of interest (Donoso et al 2006), and although many mechanisms of production have been postulated (Turner 1998), a complete theory remains elusive (Stenhof 1999). Theories that have been put forward to explain ball lightning include antimatter (Ashby & Whitehead 1971), electromagnetic standing waves within a ball of plasma (Watson 1960), retinal after images (Argyle 1971; *sw.hughes@qut.edu.au Charman 1971), electromagnetic knots (Ranada & Trueba 1996), oxidation of nanoparticles (Abrahamson & Dinniss 2000), corona discharge generated by dissipating electrical ground currents (Lowke 1996), microwave interference (Ohtsuki & Ofuruton 1991), plasma surrounded by hydrated ions (Turner 1994), superconducting plasma vortices (Dijkhuis 1980), polymer composites (Bychkov & Bychkov 2002), light bubbles (Torchigin & Torchigin 2007) and even black holes of cosmic origin (Muir 2007).…”