We've all heard the best approach to solve a problem is to "sleep on it." It turns out there may be more truth to this adage ...

How old is Elmo on Sesame Street? Learn why the iconic red character is permanently 3½ years old, the educational reasoning behind his age, and how ages work for other Sesame Street characters.

Pink noise, a staticky sound that’s supposed to help people fall asleep, may actually worsen your rest, a new study found.

Most of us dismiss these mental escapes as idle fantasies, but psychological research suggests they are more revealing than ...

A good resolution for the new year is to cut down on the extra cups of coffee later in the day. Experts recommend having your last cup of coffee around noon or 8 hours before sleep. However, it ...

NPR's Short Wave talks about babies' perceptions of rhythm, how sleep may help us solve puzzles and why snakes may be able to ...