Yawning is a familiar gesture. It often appears when one is tired or when changing states of alertness, for example at the moment of falling asleep or waking up. However, it has a unique aspect: ...

Human beings aren’t the only animals to yawn when they see another of their kind doing the same. So do dogs and some primates, including chimpanzees. But in a new study at Yerkes National Primate ...

Have you ever noticed how one yawn can trigger a cascade of yawns in a room? Researchers uncover that this isn't just ...