Speed dating was invented by a Rabbi in 1999.
45
Coins usually survive in circulation for about 30 years.
66
If left alone, 70% of birthmarks gradually fade away.
193
A pipe 2 feet in diameter will allow four times more fluid to pass through it than a pipe 1 foot in diameter.
20
In the U.S., more than 10% of lottery prizes go unclaimed!
55
The sound you hear when you crack your knuckles is actually the sound of nitrogen gas bubbles bursting.
244
A fire in Australia has been burning for more than 5,000 years!
91