auroral chorus
n.— «Those sounds are now commonly known as atmospheric or natural radio, auroral chorus and VLF (“very low frequency” phenomena).» —“Guggenheim Scholar to Study Implications of ‘Atmospheric Radio’” UC Davis (California) Apr. 17, 2006. (source: Double-Tongued Dictionary)
Further reading
The new book Gesture: A Slim Guide (Bookshop|Amazon) by linguist Lauren Gawne includes some fascinating studies about the movements that accompany spoken or signed language. In one, participants were asked to learn rules of a game, then explain...
The Portuguese idiom virar a noite refers to doing something all night, such as studying or dancing. Literally, virar a noite means “to turn over the night.” In French a sleepless night is a nuit blanche, or “white night.”...