Ghosts and Electromagnetic Fields

Electromagnetic fields, or EMFs, are often treated by paranormal investigators as possible signs of ghostly activity. EMF meters can detect invisible changes caused by wiring, appliances, radio signals, and other electrical sources, but there is no scientific evidence that ghosts themselves produce electromagnetic fields.
This episode explores research suggesting that unusual magnetic activity might influence feelings of a mysterious "presence," including Michael Persinger's famous experiments. Later controlled studies, however, found that suggestion and expectation may explain these…