That’s no ghost—it’s low-frequency sound waves known as infrasound.

New research suggests that eerie sensations often attributed to hauntings may be caused by infrasound—low-frequency sound waves below human hearing. Experiments found that exposure to around 18 Hz ...

New research suggests that infrasound—low-frequency sound waves below human hearing—may explain creepy sensations often attributed to haunted places. Controlled experiments found that exposure to ...

Eerie sounds from the edge of space were recorded for the first time in 50 years aboard a NASA student balloon experiment. Infrasound microphones captured the mysterious hisses and whistles 22 miles ...

ALBUQUERQUE, N.M. -- Sheets of plastic similar to that used for garbage bags, packing tape, some string, a little charcoal dust and a white shoebox-size box are more than odds and ends. These are the ...

Something usually feels off about places rumored to be haunted. Shutters tremble, doors open themselves with a creak of invitation, and shadows appear to move on their own—but at least some of the ...