1. The Bloop
As science unravels the great mysteries - the marvel of DNA, the origins of the universe and how Ronaldo manages to get his hair so greasy - it's comforting to know that there are still some things that science doesn't have the foggiest idea about.
Throughout the summer of 1997, an ultra low-frequency, unusually lengthy hum was picked up from the ocean.
The scientific verdict was that the recording matches that of an animal but one much, much larger than a blue whale, the largest animal known to man. To this day no credible answer has been given as to what, or who, caused The Bloop.
