Ever since my kids convinced me to watch Frozen for the hundred and eleventh time, I can’t seem to let go of the song Let it Go. After last night’s Oscars, you too might be suffering from “a constant loop of fifteen to twenty seconds of music lodged in your head for at least a few hours, if not days — or, in severe cases, months.” The New Yorker’s Maria Konnikova on the anatomy of an earworm.

+ Those infant sleep machines can get so loud that they actually pose a longterm hearing risk.