New theory may at last explain a swamp’s ghostly will-o’-the-wisps Science News ExploresUnveiling ignis fatuus: Microlightning between microbubbles PNASWe may finally know what causes will-o’-the-wisps New ScientistGhostly Swamp Lightning Explained Nautilus | Science ConnectedThe Mystery of Ghostly Will-o’-the-Wisps May Finally Be Solved Scientific American