Most people picture sleep as a single block of rest at night, maybe stretched a little longer on weekends. Penguins live by a different rhythm. Their idea of rest is broken into countless flickers of ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. WASHINGTON (AP) — It’s a challenge for all ...

But will the penguins even be awake at night? The aquarium assures its guests that they will be. “Don’t worry — African penguins have unusual sleeping patterns and will keep you entertained until your ...