All known human languages display a surprising pattern: the most frequent word in a language is twice as frequent as the second most frequent, three times as frequent as the third, and so on. This is ...

It's the time of year when seemingly innocent jingles tunnel into my brain. Right now I'm haunted by Ariana Grande's "Santa Tell Me," which I heard for the first time while researching this article.

Audibly distinct variations in the primary song of Cassin's Sparrow (Aimophila cassinii) allow individual males to be identified in the field by their unique repertoires. Small repertoire size, ...