The chilling prospect of Arctic thaw

A STRANGE ghostly light can appear over bogs at night.

“Ignis fatuus”, or “foolish fire”, seems to vanish as you approach it.

“Will o the Wisp” and “Jacky Lantern” are its common names. Jacky made a pact with the Devil; like Faust, he traded his soul for favours. In return, the Devil gave him a burning coal so that he could lure foolish travellers to their deaths in swamps.