This special edition of Coolabah, ‘On gases, clouds, fogs and mists,’ collects articles and creative writing on the theme of atmospheres. While set in a variety of geographic regions and spanning different historical time periods, a through line in these works is their concern for the embodied experience of atmospheres. They are also full of ghosts, monsters and unexplained apparitions, gaseous forms that demand our attention. These apparitions are not just figments of one’s imagination or mere frightened projections, they are made of real atmospheric effects that exist outside of human perception or narration of them.