Here’s what might spark ghostly will-o’-the-wisps
Under a midnight moon, Luigi Garlaschelli peered out over graves. He was scouting for glowing balls of light known as will-o’-the-wisps. Like a ghostbuster, Garlaschelli, a chemist formerly at the University of Pavia in Italy, wore a device to vacuum up the wisp for study — should one appear. Sadly, one didn’t. But for hundreds…
