15 unsolved mysteries that cannot be explained. We countdown unsolved mysteries that cannot be explained. There are many mysteries in the world so in this video we take a look at some we have covered in previous videos. Since the dawn of time, the human race has seen mystery and intrigue around every corner. Mysterious events have been put down to the supernatural, the paranormal and even the extra-terrestrial. One things for sure, there have been a lot of unexplained mysteries over the centuries and with modern technology giving people greater access to photography and previously unexplored parts of the galaxy, there are bound to be plenty more cropping up. So in this video we take a look at some of the biggest mysteries I've covered so far.