For each episode of Fringe, Popular Mechanics asks experts to analyzes the science of Fringe, and separate the science fact from the science fiction.

For "Bad Dreams," PM brings in Doug Kirsch, a clinical instructor at Harvard Medical School and Regional Director of Sleep Health Centers in Boston, James C. Harris, a professor of Psychiatry of Behavioral Sciences, Pediatrics and Mental Hygiene at The Johns Hopkins University, and Dr. William Jack, a parapsychology expert at Franklin Pierce College, to discuss Sleep Science and Parapsychology.

PM: Fringe's Parapsychology and Sleep Science are Slim on Facts