Fine-grained volcanic ash can be found as an ingredient in some toothpastes.
55
The full moon causes a tidal wave to roll up the Amazon river once in day and once in night for a period of only three weeks in a year. This results in continuous 4m high wave that can be surfed for up to 13km.
14
The hands of the clock on the back of the $100 bill are set at approximately 4:10.
72
Those things you see in your eyes when you stare into space are called Mouches Voltanes, which are also broadly referenced to as Floaters.
9
If you flip a coin ten times, the odds against its coming up with the same side showing each time are 1,023 to 1.
39
The Gate Tower Building skyscraper in Japan has a highway passing through its fifth, sixth and seventh floors.
7