Only humans shed emotional tears.
331
On average, the life span of an American dollar bill is eighteen months.
33
The average IQ is 100, while 140 is the beginning of genius IQ.
140
There are 293 ways to make change for a dollar.
148
If you mouth the word "colorful" to someone, it looks like you are saying "I love you".
634
Blue light fends off drowsiness in the middle of the night, which could be useful to people who work at night.
240
A typical lead pencil can draw a line that is 35 miles long.
158
Your fingernails grow faster in summer.
744