A new study finds that inaudible sound waves called infrasound may cause people to experience a creepy, haunted feeling. Research subjects exposed to infrasound had higher levels of the stress hormone ...

There are unseen forces behind why a house might feel haunted — but no, it’s not ghosts. New research suggests that inaudible infrasound waves emitted by a building’s old boiler, pipes, and plumbing ...

Infrasound waves are usually too low for the human ear to actually hear, but they can still have a negative effect on mood—possibly an explanation for places that feel haunted An experiment that ...