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
When glass breaks, the cracks move at speeds of up to 3,000 miles per hour.
423
On average, every dollar bill you touch has over 3,000 different types of bacteria.
8
The glue on Israeli stamps is certified kosher.
67
Tae Kwon Do is only around 60 years old.
64
Diamonds mined in Brazil are harder than those found in Africa.
40