Jakke Tamminen receives funding from the Economic and Social Research Council and The Waterloo Foundation. Have you ever watched a duck sleep and wondered how it keeps one eye open? Ducks, like many ...

The sleeping brain is more active if it hears unfamiliar voices rather than familiar ones. The finding suggests that we can process information about our environments even in the depths of sleep.

Technology’s many automated female voices are nothing if not helpful. By Susan Dominus Artwork by Yehwan Song Susan Dominus is a staff writer at The New York Times Magazine and the author of the ...