For centuries, will-o'-the-wisp has puzzled scientists and travelers alike. According to folklore, it is the product of faeries, demons, and spirits. More recently, scientists have attributed ...

For centuries, people have reported strange, flickering lights over marshes and cemeteries. In folklore, these lights were called “will-o’-the-wisp” in Britain or “lygtemænd” in Scandinavia. Some ...

Hovering blue flames that flicker over bogs and marshes have inspired ghostly folktales for centuries. Known as “will-o’-the-wisp,” “jack-o’-lantern,” “corpse candle” and “ignis fatuus” (“foolish fire ...