Fine-grained volcanic ash can be found as an ingredient in some toothpastes.
55
If you dropped an aerodynamic object (such as a bullet) from the Empire State Building, you could kill someone.
132
The Gate Tower Building skyscraper in Japan has a highway passing through its fifth, sixth and seventh floors.
7
A quarter has 119 grooves on its edge, a dime has one less groove!
34
No one knows Albert Einstein's last words. Just before he passed, he spoke several words in German, but his nurse only knew English.
154
Contrary to popular belief, hair does not grow back darker and thicker after it has been shaved.
71
The Main Library at Indiana University sinks over an inch every year because when it was built, engineers failed to take into account the weight of all the books that would occupy the building.
240