A science-fiction fear about artificial intelligence running the world is no longer theoretical, according to one U.S.

Every October, we line up for haunted houses, tune in to horror films, watch reruns of “The Dead Files,” and tell ghost stories that make the hairs on our necks stand up. It’s a paradox — why do we ...

What seems like childish nonsense actually reveals sophisticated brain wiring that's been protecting humans for thousands of years. Many children experience fear of darkness, which, in certain cases, ...