Ghost sightings went unsolved. A scientist just explained them.

A decapitated train conductor is said to prowl a section of railroad in Maco Station, North Carolina, illuminating the tracks with a lantern. But this ghost is far from the only reported rail sighting in the U.S. "There's a recurring theme. There are ghosts reported along railroad tracks holding lanterns," U.S. Geological Survey seismologist Susan Hough told Mashable.While investigating the 1886 quake in Charleston, South Carolina — a potent 7.0 temblor that collapsed buildings and killed