Unlike other theories on this list, which are meant to explain the Earth itself and the various events that have taken place over the millennia, Tectonic Strain Theory sets out to explain something other-wordly. Namely, UFO sightings throughout history. Not only UFOs, mind you, but also ghosts, spontaneous combustion, and basically anything else that are thought of as otherwise inexplicable events.
Tectonic Strain was theorized by Professor Michael Persinger in 1975, and suggests that every UFO sighting and basically unexplained phenomena people claim to have seen can be explained away by electromagnetic fields that occur when the Earth's crust strains near seismic faults. According to Persinger, these EM fields create
hallucinations, which are based on images from popular culture. That sounds like a really roundabout way of blaming something on TV, if you ask us.