The art of nodding off appears to have been mastered by breeding chinstrap penguins, who take more than 10,000 naps a day, with each nap lasting an average of four seconds, according to a new study.

It's a challenge for all new parents: Getting enough sleep while keeping a close eye on their newborns. For some penguins, it means thousands of mini-catnaps a day, researchers discovered.Chinstrap ...

Anyone who has ever been deeply sleep-deprived is probably familiar with microsleep. Microsleep occurs when you fall asleep for only a few seconds. For humans, these are involuntary sleep bursts ...

In the 2014 animated film Penguins of Madagascar (streaming now on Peacock), a small group of Antarctic flightless birds undertake the greatest adventure in penguin history. Along the way, they have ...