Half of all Americans believe in ghosts - despite any compelling evidence of their existence. Find out why we believe in what we can't see, and why loneliness may increase our chances of a poltergeist experience. Hear the tale of the Toys R Us ghost, and scope out the latest in haunted real estate.
Also, why our Hollywood skeptic is tired of wild ghost chases and Phil Plait speaks out on lapses in critical thinking. This week: vaccination and autism.
It's Skeptical Sunday... but don't take our word for it!