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 ...

Hunting telltale bubbles “These seeps are fascinating and extreme environments,” said Claudio Argentino, a sediment biogeochemist at UiT, The Arctic University of Norway, whose fieldwork started at ...