5) Spontaneous Human Combustion
No matter how bizarre it might seem, spontaneous human combustion is exactly what its name suggests: humans bursting into flames without any apparent external cause. Earliest reference to cases of spontaneous human combustion can be found in the 1673 ” De Incendiis Corporis Humani Spontaneis” by Jonas Dupont.
Scientific explanation behind SHC exists mainly in the form of conjectures, usually associated with old age, obesity, cigarette smoking and even ketosis as a result of alcoholism. Instances of SHC have been widely covered in fiction, as in Bleak House by Charles Dickens, and also the 1984 mockumentary film This is Spinal Tap.
6) The Hum
Around 2 to 11 percent of people living in specific areas in the US, the UK, Canada and New Zealand are capable of hearing a constant humming sound, of unknown origin. Taos in New Mexico, Calgary in Canada, Bristol in England and more recently, Wellington in New Zealand are only a few in the list of locations where the hum has been noted. According to public reports, the hum is a kind of sustained low-pitch noise that can be detected only by a certain percentage of the population. It is usually more pronounced indoors and at night. People subjected to this relentless droning sound generally belong to the 55 – 70 age group.
Physiological effects of the hum include headaches, dizziness, insomnia, nausea and even suicide in extreme cases. Although scientific reasoning mainly points towards the usual sources of noise pollution, substantial research regarding its solution and treatment seems to be largely missing.
7) Morning Glory Cloud
A type of tempestuous Arcus cloud that can stretch up to 1000 kilometers in length, the Morning Glory Cloud is a rare atmospheric phenomenon, quite sporadic in terms of its locations. It is about 1 to 2 kilometers high, appearing very close to the ground. It forms a striking unbroken cloud line and is usually accompanied by violent winds.
Although sightings of such clouds have been reported in various places, such as Berlin, the Arabian Sea, the English Channel and the eastern part of Russia, they are most commonly observed in Northern Australia, near the Gulf of Carpentaria region. The lack of substantial scientific examination, regarding the specific conditions that give rise to the Morning Glory Cloud, is mainly due to its highly unpredictable occurrence.