When glass breaks, the cracks move at speeds of up to 3,000 miles per hour.
423
The "Cobra Effect" is where a solution for a problem actually makes the problem worse.
21
"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
Blue light fends off drowsiness in the middle of the night, which could be useful to people who work at night.
240
It is estimated that millions of trees in the world are accidentally planted by squirrels who bury nuts and then forget where they hid them!
174
A million dollars' worth of $100 bills weighs only 22 pounds!
32
Speed dating was invented by a Rabbi in 1999.
45