The best diamonds are colored blue-white.
80
A typical lead pencil can draw a line that is 35 miles long.
158
Less than 3% of the water produced at a large municipal water treatment plant is used for drinking purposes!
24
In many countries, urine was used as a detergent for washing.
17
There are 170,000,000,000,000,000,000,000,000 ways to play the ten opening moves in a game of chess.
266
The scent of women’s tears temporarily reduces sexual arousal and testosterone production in men.
12
"Big Ben" in London isn't a tower, the bell inside the tower is called "Big Ben", the tower itself is called "The Elizabeth Tower".
18
The average IQ is 100, while 140 is the beginning of genius IQ.
140