Lockjaw (trismus) is a painful condition that limits your ability to open your mouth all the way. It occurs when the muscles you use to chew spasm, meaning they can’t relax completely. The term ...

Dear Eric: I play cards weekly with a group. One of the women sometimes chews gum during our games, noisily and with her mouth open. This is worse than fingernails on a chalkboard to me. Why do ...

Dolphins are known for what appear to be big, contagious smiles. But do they actually, well, smile? The answer, according to a new study of dolphin play, is a resounding “maybe.” Dolphins use their ...

Posts from this topic will be added to your daily email digest and your homepage feed. YouTube’s A / B thumbnail testing helped MrBeast find that a closed mouth led to longer watch times. YouTube’s A ...

NPR's Eric Deggans talks with Zahid Rafiq about his first book, "The World With Its Mouth Open," a collection of short stories about the lives of people in Kashmir. In a new short story collection ...