Have you ever had the sense that you’ve done something or gone through a new situation before? Does it seem like you know what’s going to happen next? That feeling is often described as déjà vu, which ...

A few days ago, I was visiting a new coffee shop in an unfamiliar neighborhood. In line to place my order, a polite stranger in front turned around, nodded at me, and said, "Hello." In that otherwise ...

Déjà vu is a bit of a mystery. Experts aren’t sure what causes the sensation of having experienced something before, but they have some compelling theories. “Déjà vu” describes the uncanny sensation ...