Study: Infrasound likely a key factor in alleged hauntings - Ars Technica

1. Study: Infrasound likely a key factor in alleged hauntings  Ars Technica
2. Spooky feelings in old houses may be caused by boiler sounds, study suggests | Psychology  The Guardian
3. Worried Your House Is Haunted? The Spooky Sensation Might Arise From a Surprisingly Simple Source  Smithsonian Magazine
4. No, your house isn’t haunted by ghosts — spooky experts reveal simple explanation for things that go bump in the night  New York Post
5. That ghostly presence may just be bad plumbing  Popular Science