‘Ghost Fire’ in Marshes Sparked by Strange Chemistry A phenomenon called microlightning may explain ghostly blue marsh lights By Rachel Nuwer edited by Sarah Lewin Frasier An illustration of an ignis fatuus, or will-o’-the-wisp, by Josiah Wood Whymper from the book Phenomena of Nature (1849). Join Our Community of Science Lovers! Some call them will-o’-the-wisps;…