What is a Boojum, this creature of unknown form? Said to make mortals vanish at the mere sight of it, the Boojum drifts through time, space, and beliefs. Hard to believe it exists—yet...

Often described as the strangest and most malevolent being on Earth, the Boojum has, over the centuries, become a meeting point between a poem by Lewis Carroll, the legacy of an Arizona botanist, and the ancient tree of a Mexican desert people—said to be capable of suddenly altering the course of history.