Mysteries are what keep our imagination working. But certain ones like the aforementioned are no less than diseases to the curious heads. They can cling onto your brain and ride on your nerves like a hamster running on its wheel. Just as the tiny rodent who keeps running towards nothing, there are high chances of you never reaching anywhere with these mind-boggling mysteries.Watch Top 15 Mysteries That Science Has Failed To Explain from dejavu to near death experiences.