Witnessing a double rainbow may seem like a sporadic event, and seeing three at once is extremely rare. But new photographs show this exceptional phenomenon in action.

Australian astrophysicist Stephen Hughes said that some UFO sightings could be explained by ball lightning and other atmospheric phenomena.

By Schickore, Jutta Abstract. This article compares investigations of the process of vision that were made in early nineteenth-century Britain and the German lands. It is argued that vision studies differed significantly east and west of the North Sea.