Blue light fends off drowsiness in the middle of the night, which could be useful to people who work at night.
240
On average, every dollar bill you touch has over 3,000 different types of bacteria.
8
The scent of women’s tears temporarily reduces sexual arousal and testosterone production in men.
12
When glass breaks, the cracks move at speeds of up to 3,000 miles per hour.
423
A jiffy is an actual unit of time for 1/100th of a second. Thus the saying, I will be there in a jiffy.
57
"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
'Second Street' is the most common street name in the U.S.; 'First Street' is the sixth! "
41