Supernatural Occurances

Is there any scientific or mathematical evidence of clairvoyant or "supernatural" occurrences or phenomena? I know that asking this is trampling the definition of supernatural, but I'm curious if there are any cases like this. If you do answer, please cite a source.

I'm just a carpenter who wanted some answers.  I knew that the trade would allow me to work anywhere, but if I was smart I would have learned computers.